Malicious PDF — malware analysis report

Static analysis result for SHA-256 34184bc4a429ed5a…

MALICIOUS

PDF

89.2 KB Created: 2021-07-27 07:37:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: c7eba0cff95d6ac3cfe0863132d671fc SHA-1: 7fa02cb98e08b402476c9583b3d9fe58362e06b9 SHA-256: 34184bc4a429ed5a5eb5cf406a79884d83bd59e118db756339068dda59f930ea
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, including one pointing to a raw IP address, and several others hosted on compromised WordPress sites and disposable domains, suggesting it functions as a link farm to distribute further malicious content. The presence of these links and the overall structure strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://alshamiltrading.com/alshamilfiles/file/jagurujuxizup.pdf In PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/160dbb2097c613---76600667253.pdfIn PDF document text
    • http://drapa-technika.cz/UserFiles/File/pamotimogerodedamum.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/8152e977273081ac40f47520d7615f72/45402372315.pdfIn PDF document text
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/f3e190f5b8a74786853ba2c09ad35183/sovubakuguv.pdfIn PDF document text
    • http://systemsbiology.at/uploads/assets/file/filaridotifagubediputam.pdfIn PDF document text
    • http://hangquangauto.com/files/96614489753.pdfIn PDF document text
    • https://wolfgang-photography.com/userfiles/files/tajowogukavofed.pdfIn PDF document text
    • http://ackerviewguesthouse.com/userfiles/file/80383076275.pdfIn PDF document text
    • http://terezmisszio.eu/files/file/87548811228.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/fixexazugekotamerugumur.pdfIn PDF document text
    • http://hit-air.pro/ckfinder/userfiles/files/wojamerawofimifotupajos.pdfIn PDF document text
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/6bc0cac13c57d4ff205f0703d340459f/82451524860.pdfIn PDF document text
    • http://cabin4kids.org/clients/0/05/050cd0fff5f75fdfd14851583cc0de74/File/lozuzotiwuzedidagum.pdfIn PDF document text
    • http://marinapogon.pl/upload/file/malemoveruvojenim.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/1606c85a8ba2da---suxuxerukuz.pdfIn PDF document text
    • http://graylegalservices.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/27175939894.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/c82ded9f3oplikvhclvdppk2q3/soxexusopaguwofogiwesenef.pdfIn PDF document text
    • http://140.121.161.111/ckfinder/userfiles/files/nezedabakomiputojumu.pdfPDF link annotation
    • http://archinfo.ru/uploads/file/pededekiwukopemixi.pdfIn PDF document text
    • http://ikhmongol.mn/ckfinder/userfiles/files/jemiwegemududejaze.pdfIn PDF document text
    • http://bahtiyardishekimi.com/fckfiles/file/xeranovigixagaze.pdfIn PDF document text
    • http://slovbau.sk/test/userfiles/file/29505214308.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/3hu5h2en3vppadf28hca36b8l3/wegasidonatiputeguji.pdfIn PDF document text
    • http://renovator.cz/files/file/zupupibokolano.pdfIn PDF document text
    • https://pnlcoach.com/misc2/file/In PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=does+the+samsung+galaxy+watch+3+have+ekgPDF link annotation
    • http://perfecturology.cafe24.com/upload/editor/imagefile/vokumujojugefetav.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f859.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF859 16544 bytes
SHA-256: ab7d828e847b2d07cbc3edc570e3a76f0e15fb27c03c4d610aa92fa88ba42b8b
font_01_sfnt_off00012373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12373 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013b8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B8A 11216 bytes
SHA-256: 18c203ffa9a7ac6ce26c0605487b629be17e24aace55fe5736bf72386798c966

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