Malicious PDF — malware analysis report

Static analysis result for SHA-256 d60481e29a311af4…

MALICIOUS

PDF

36.1 KB Created: 2020-08-15 05:41:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 196d2fac93ae95b11d209efc6686070f SHA-1: 136e6a0495f1a13557cf9d45cdd3f975c988fb7e SHA-256: d60481e29a311af4914b37bbd4e09ad2b89740877593bc4768cd2856462ab9e0
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded external links, with one identified as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated, but the presence of numerous links suggests a link farm or redirection attempt. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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.
  • 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.com/wb?keyword=generic%20drug%20product%20development%20bioequivalence%20issues%20pdf In PDF document text
    • http://bedawukas.deyrecreativedesignsexpressions.com/uploads/1/3/1/0/131070487/sekokapolopo.pdfIn PDF document text
    • http://files.jamaxe.com/uploads/1/3/2/7/132712006/00181dd999ab.pdfIn PDF document text
    • http://rifigabow.lanesjewellers.com/uploads/1/3/0/7/130775169/gutokuj_pirujeterevipi.pdfIn PDF document text
    • http://files.family-martialarts.net/uploads/1/3/1/3/131384573/e6e8d812c4eaa0.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/1/0428/9835/8432/files/mujunevuduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7207/7475/files/jemubofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0391/5933/files/come_prepararsi_all_esame_del_celi_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8172/8151/files/sibatibitola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0975/9640/files/livelerutaxuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8178/4726/files/94239361032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9072/9377/files/treatment_case_study.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8745/2576/files/asme_bpvc_section_ix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2050/1660/files/crown_dc300a_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5651/9576/files/89892222052.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 4

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_off00004de0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DE0 5832 bytes
SHA-256: e024a8637cfb83dc175662f934cad69677f3d7841fcf431fb20cdd711f732fb2
font_01_sfnt_off000061a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A1 9860 bytes
SHA-256: a574497f28f4d70ed2d56bc3df2f86242dd5fbd1763cdb0f46b013f25c28ce8c

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