Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dc2beac6a01f6bf…

MALICIOUS

PDF

58.2 KB Created: 2020-07-30 05:43:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 00682fcb27f60e7f2b4c5a018be33910 SHA-1: 78ea2779a883593a0b07c1be87da557a2fad9e4e SHA-256: 3dc2beac6a01f6bf2ec35568966077e22635d308d1e327da257bf1b98a88b500
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of these links, 'https://ttraff.cc/pify?keyword=cell+membrane+of+bacteria+pdf', is identified as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites.

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.cc/pify?keyword=cell+membrane+of+bacteria+pdf In PDF document text
    • http://files.goldendaleobservatory.com/uploads/1/3/1/3/131398540/20bfe475a329fb.pdfIn PDF document text
    • http://files.hivhope.net/uploads/1/3/1/4/131453406/834b0d1a77ae.pdfIn PDF document text
    • http://files.allthingsdunham.com/uploads/1/3/0/7/130739510/5015553.pdfIn PDF document text
    • http://files.eternalimpactmissions.org/uploads/1/3/1/0/131070207/d4ca2.pdfIn PDF document text
    • http://files.laneinspections.com/uploads/1/3/0/7/130776592/1315519.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/1/0438/0724/4450/files/xikivadejuxaxuxaxemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mevebetivegukubevam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3680/2204/files/poxupomive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6200/1821/files/labadunogite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/3518172017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0006/9283/files/nirudinatego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7423/9129/files/20995523482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7121/6542/files/datilekatojunekuwilosefum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/zivobudopotajuxiwixujavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/nisuwejesujavekizejelela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jewepogepavab.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_off0000a548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA548 5072 bytes
SHA-256: 3b0406b004715451090de9017fa2cc12635772061c46a81324749b9a0555e109
font_01_sfnt_off0000b663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB663 10412 bytes
SHA-256: ff80095a6af9b6b2247556380103009fd66455a04017902a0012aeb6345e66c7

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