Malicious PDF — malware analysis report

Static analysis result for SHA-256 b41720a995486886…

MALICIOUS

PDF

40.7 KB Created: 2020-08-09 16:03:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69e208d3fb3eef7b90cd7b179086255a SHA-1: eb47b120862c824fdc30ce1ee8d4c22448cd0cc6 SHA-256: b41720a9954868869a488d1ae85a7a3b6fa25c3571d4d6017c459ab2bd4d323d
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, with one specifically pointing to a known malicious redirector. The document body is heavily obfuscated but contains the URL 'https://ttraff.com/pify?keyword=abbreviations+in+english+language+pdf', which is also listed as a malicious redirector. The presence of numerous links suggests a link farm or SEO poisoning tactic to distribute malicious content.

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=abbreviations+in+english+language+pdf In PDF document text
    • http://files.essenkitchen.com/uploads/1/3/1/3/131380083/gosojakavegiwa.pdfIn PDF document text
    • http://files.sweetcheeksbyjulie.com/uploads/1/3/1/3/131384573/8297717.pdfIn PDF document text
    • http://zozidejoj.trailwaybrewing.com/uploads/1/3/1/4/131452883/3339489.pdfIn PDF document text
    • http://files.rcfenceanddecks.ca/uploads/1/3/0/8/130814611/xagejozav-poxirukezijepel-lufifuwuwerolom.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/1/0431/2789/8268/files/82219134363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7600/1704/files/side_by_side_english_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75555741983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/33078626275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3658/0759/files/remopibitexiporerife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/18164037655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9050/1020/files/jiborazevezuwomekedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2470/9782/files/61326291822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gopag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8974/6337/files/xoxekujomesiweges.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0243/7527/files/anemia_aplasica_medigraphic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6287/8618/files/41355304999.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
🗂 Part of campaign: essenkitchen.com 4 samples

Related samples 6

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_off000060ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60AD 5492 bytes
SHA-256: 2bd64da1e37855f5767c8f619833d8563afe2b9a0af844d3d792a795186abaaf
font_01_sfnt_off00007357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7357 10096 bytes
SHA-256: d81d19b5b2a9af584c5d2d986ba25b024f2a06c936302eb34239854734ea9bd4

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