Malicious PDF — malware analysis report

Static analysis result for SHA-256 4304c73a7402e3a6…

MALICIOUS

PDF

34.2 KB Created: 2020-08-03 18:20:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f56ffccff4c0572c3c55778c8f4b9e86 SHA-1: d1f613fd35a69c60acf2c845a65ad50508c0cdac SHA-256: 4304c73a7402e3a6f40d3071187975eaedd76b4ac81465603283ec0ab672a1bc
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL is https://ttraff.cc/pify?keyword=bhagavad+gita+tal+como+es+prabhupada+pdf, which likely leads to a phishing or malware distribution site. No scripts were extracted from this sample, and the document body is heavily obfuscated.

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=bhagavad+gita+tal+como+es+prabhupada+pdf In PDF document text
    • http://files.grounded-infrastructure.com/uploads/1/3/2/8/132814980/wiwimisonunetogorob.pdfIn PDF document text
    • http://files.corissacaptures.com/uploads/1/3/1/3/131378771/3485481.pdfIn PDF document text
    • http://files.sahja.org/uploads/1/3/2/6/132681144/tojanesepekokodi.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/1/0437/1477/3147/files/puwuremifiwotosega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3253/4440/files/rikonedibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3193/6674/files/20070946256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/nagamagezalaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/ginomilovudekejakado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3704/6437/files/deruwam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9850/4354/files/brainsonly_newsday_crossword.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1829/6216/files/91854557332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0329/5382/files/93141864209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4432/2978/files/dobumoluwigixibagij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5580/0739/files/nosokurowokoluzo.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_off000043c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43C8 5816 bytes
SHA-256: e46476e5b0b51198799b3da42dc2f8313af62e866e04d18c5198ffa7dee60285
font_01_sfnt_off00005774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5774 10736 bytes
SHA-256: 82a65c4066f726c82f9bf016f4a5ed15397a9b25e680f78c1c3cada3fb0d94c9

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