Malicious PDF — malware analysis report

Static analysis result for SHA-256 213bd2aeb973ed3c…

MALICIOUS

PDF

34.8 KB Created: 2020-08-10 03:52:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d59d18f60d780880d5da78479001391d SHA-1: 2754faf1cf8d09053640a7f8bf0864dcc9dd97ec SHA-256: 213bd2aeb973ed3c089e1f2ac3960a814e7fba8d7eab42acd40a53ef88b3e048
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with the primary URL pointing to a known malicious redirector. This suggests the document is designed to lure users to malicious sites, likely for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=why+i+love+australia+bronwyn+bancroft+pdf In PDF document text
    • http://files.diestrodecuerdas.com/uploads/1/3/0/8/130874162/a1d8340b98246e.pdfIn PDF document text
    • http://files.froghappy.com/uploads/1/3/1/4/131453348/5398064.pdfIn PDF document text
    • http://files.mathlandinc.com/uploads/1/3/2/6/132696233/1035132.pdfIn PDF document text
    • http://fadibi.oregonsiberiancats.com/uploads/1/3/0/8/130814328/fixudabatebubelit.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/1/0434/3149/3784/files/venekajedovib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6372/9557/files/74125476196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0845/8905/files/pevuxidogaxorolixeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5597/2501/files/70807881553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9944/2590/files/adobe_indesign_cs5_tutorials_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5820/0725/files/tewozitunigoxiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7629/6614/files/vipirew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3010/1668/files/big_data_analytics_darshan_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7552/6042/files/zikogigawaxaziwinedogar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8793/7179/files/vezunapobaperotawegege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/28921891094.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 5

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_off000049a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49A0 5648 bytes
SHA-256: 07f649faeebff03f5399f0b2e2c4cc5fce45895af8e01b75668cb1fb2fbd2775
font_01_sfnt_off00005cf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF0 9716 bytes
SHA-256: e805d73881d7a597b567fe2cf9d6fff98d5247f3082b63f88f63f0297b5e63cd

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