Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba35486ff4a6e48d…

MALICIOUS

PDF

81.3 KB Created: 2021-09-05 04:15:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 42d5e6352714adf346d63ecf85f14167 SHA-1: bb8e26cd4821f645bbc9cb928a47b491e076f1a6 SHA-256: ba35486ff4a6e48de80e3d94bcedd2fe40a0e318aa5e76293cfa1fe8baaf98f0
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to redirect users to malicious sites, potentially exploiting embedded JavaScript or other PDF vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://philabc.ru/uplcv?utm_term=grafting+in+tomato+pdf PDF link annotation
    • http://avalon-essenzen.at/userfiles/file/wizagekiwog.pdfIn PDF document text
    • https://klcmekatronik.com/ckfinder/userfiles/files/12190056176.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c569a5e1d69---xidujozagelesubaledosiga.pdfIn PDF document text
    • http://artistalexanderkanevskywinnerinternationalaward.com/clientMedia/file/88325068378.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2c15eff1d---92166337638.pdfIn PDF document text
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/vf2g9824lqtjnps2qfsld09agl/pizubamulij.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092ce0c82c9a---tejosalumofamanile.pdfIn PDF document text
    • http://hanmih.com/userfiles/file/20210723224902.pdfIn PDF document text
    • http://rocincorporated.com/domain.com/images/dynamic_pages/file/gowipaxodowobez.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608324425e0ce---vizufozobobezuli.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c067283c634---xodesifuxukuritow.pdfIn PDF document text
    • https://dangeloremodeling.com/nbloom/fckuploads/file/93040158735.pdfIn PDF document text
    • http://cp-tournament.org/ckfinder/userfiles/files/96696158366.pdfIn PDF document text
    • http://ahdongjiu.com/upload_fck/file/2021-5-1/20210501110356370129.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/39679033130548b2eb08e920feedd4a2/papudiman.pdfIn PDF document text
    • http://surtek.biz/image/files/20150117_235145.pdfIn PDF document text
    • http://czdashan.cn/uploadfile/file/2021050915301973499.pdfIn PDF document text
    • http://eatatrudy.com/uploads/files/9170244539.pdfIn PDF document text
    • http://absigorta.come/file/95314445217.pdfIn PDF document text
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/a7f9585a9b83bff1c50edf5589837e47/fetib.pdfIn PDF document text
    • http://lg-palette.com/upload/files/finivifof.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/dfeacdf19e2f93ff839bad73da396617/pixoxerodejufofi.pdfIn PDF document text
    • http://www.zima.snowcat.pl/admin/ckfinder/userfiles/files/82282043863.pdfIn PDF document text
    • http://www.rafaellucenaehijos.com/ckfinder/userfiles/files/wojazopasi.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_off0000dafb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAFB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF312 10536 bytes
SHA-256: 6cc22f829cd24d3d12d36550b5880fe83c84da4275ccbb0a22455eab911dec79
font_02_sfnt_off00010ace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ACE 17048 bytes
SHA-256: 978884746167530eaf78e87b84c1049656e84e0cebbe6bf006fc878c809a3937

Open this report in the interactive analyzer, or submit your own file for analysis.