Malicious PDF — malware analysis report

Static analysis result for SHA-256 eba6156fd068543e…

MALICIOUS

PDF

82.2 KB Created: 2021-09-16 19:51:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 7c15a8a285723e287a855478445a2ea3 SHA-1: 2cd45741b60dd40b144518bd9bcac441ed826fab SHA-256: eba6156fd068543e16abeec7ce529293d4681a6c218b114dbb130023d54fc5d5
126 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of numerous external URIs and a 'link farm' heuristic indicates the document's primary purpose is to redirect users to potentially malicious websites. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mannoorpally.com/uploads/file/juliwi.pdf In PDF document text
    • http://osheamaloneynylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/62069467944.pdfIn PDF document text
    • http://tasteofruraleurope.eu/upload/File/78312303130.pdfIn PDF document text
    • https://jackinthegym.com/uploads/files/202109150621444233.pdfIn PDF document text
    • http://wxeina.com/userfiles/files/19940473282.pdfIn PDF document text
    • http://ei-windykacja.pl/upload/file/finexosatunozisipure.pdfIn PDF document text
    • http://illinoislivestock.org/userfiles/file/23210882834.pdfIn PDF document text
    • http://makassitools.com/userfiles/file///vukowapusotimagugib.pdfIn PDF document text
    • http://interface-referencement.com/userfiles/file/xifisoniduw.pdfIn PDF document text
    • http://npi-management.org/ressource/site-image/files/fenanapebofijewisaze.pdfIn PDF document text
    • https://lacaune.hu/userfiles/file/59628783315.pdfIn PDF document text
    • https://ferest.ro/imagini_ws/87507855619.pdfIn PDF document text
    • http://krajinar.cz/soubory/files/72525119326.pdfIn PDF document text
    • http://tunglamgarden.com/images/fck/file/xagolumuwalu.pdfIn PDF document text
    • http://potya.com/34933030763.pdfIn PDF document text
    • http://kbcsisa.com/upload/fckeditor/file/8610900766.pdfIn PDF document text
    • http://filtrydokoparek.pl/img/all/fazipumozomosusi.pdfIn PDF document text
    • http://daisytalavera.com/userfiles/files/dugorabexikezi.pdfIn PDF document text
    • http://tinhdauvietnam.vn/upload/files/3194138087.pdfIn PDF document text
    • http://bogaarchitetti.it/userfiles/files/63504951187.pdfIn PDF document text
    • http://xn--42-jlclgg6a3e.xn--p1ai/userfiles/file/wivusis.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1613b02c6b8e85---jinevelikuralivuz.pdfIn PDF document text
    • http://emannsltd.com/userfiles/luvegalivegusiga.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dc3b4e3284---wosobakumefakej.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=get+free+hourglasses+mystic+messengerPDF link annotation
    • 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_off0000d9b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B7 18328 bytes
SHA-256: 434d3c645e916cdff43777c8ddc21c36b0601e46045ec1e5bb34337219396a4b
font_01_sfnt_off00010914.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10914 11036 bytes
SHA-256: 89d5307ff61e865c5b1b7de94b2750ab04ef5440dd50204a390d2223e0f79b75
font_02_sfnt_off000122a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122A7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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