Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dabb2c306c41e7c…

MALICIOUS

PDF

35.5 KB Created: 2020-08-03 03:49:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 637abae82a7aa4f5d0b5f8f5e3c5d598 SHA-1: e265d525c60e94562387ca6c422f3d0df6595683 SHA-256: 7dabb2c306c41e7c6a92e89fe7bf9d2fc6ffef887c4322c1a3ce15891e4a7897
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links designed to appear as academic resources, but the primary link redirects to a known malicious redirector infrastructure. This suggests a phishing or scam attempt to trick users into visiting a harmful site under the guise of educational content. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.ru/pify?keyword=modern+physics+serway+solutions+pdf In PDF document text
    • http://files.misguidedinthemagnolia.com/uploads/1/3/1/4/131408899/7bf981d.pdfIn PDF document text
    • http://files.imarsonline.com/uploads/1/3/1/3/131380413/6c76ebc2.pdfIn PDF document text
    • http://files.awesomealgebra.org/uploads/1/3/1/4/131455475/zokabu.pdfIn PDF document text
    • http://files.heartandsoulministry.com/uploads/1/3/0/8/130815381/gekatomenako.pdfIn PDF document text
    • http://files.jarryjornopublishing.com/uploads/1/3/0/7/130776601/ludekubefaxumoj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/89854084106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1024/3229/files/53738550851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1310/2998/files/wopinijelagibaletilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7337/1288/files/susidewapis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3872/7589/files/filosobinijolekebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8857/5638/files/55209510198.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5101/4551/files/lunazepiguruxuxunufoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8520/9512/files/tadorezezaluf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8085/1364/files/53622724999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/mn_uniform_conveyancing_blanks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2843/8427/files/pasezixike.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://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D35 5440 bytes
SHA-256: 53aeebaabab122b653d3bb048324189b768fc0fccc1ac161e07b79838240ee39
font_01_sfnt_off00005fd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD8 9724 bytes
SHA-256: d3debcf00deccfbad4e9010923925e4f24b4ef6ea087f929ad168573cb67240d

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