Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff98a35c7b4a38b5…

MALICIOUS

PDF

43.2 KB Created: 2020-08-27 15:42:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7492976537e0d109d4206172ba626986 SHA-1: 9c2b1afe32acdb26075dc22b39c509e77838beed SHA-256: ff98a35c7b4a38b52955407800cfa82d1bc7ebf50442fc7c8e46d5212bcbb136
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=selling+with+nlp+pdf'. The document body, though partially corrupted, contains text suggesting a lure related to 'selling with nlp pdf' and references the wkhtmltopdf tool, indicating it was likely generated programmatically. The presence of numerous Shopify links, while many are benign, suggests a tactic to obscure the malicious redirector among seemingly legitimate 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.cc/pify?keyword=selling+with+nlp+pdf In PDF document text
    • http://files.nmffa.org/uploads/1/3/0/9/130969819/deniz.pdfIn PDF document text
    • http://files.tierrasantajuniorwomens.org/uploads/1/3/1/8/131858540/tiwuzeja.pdfIn PDF document text
    • http://files.shanehagedorn.com/uploads/1/3/0/8/130874125/miwevufunon.pdfIn PDF document text
    • http://bunekube.emergingaging.com/uploads/1/3/0/7/130775792/1668558.pdfIn PDF document text
    • http://gabij.bassreevesconference.com/uploads/1/3/1/3/131381612/19494ebed57bb.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/1/0434/2477/6354/files/gugev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/97144144638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4999/2870/files/metuvofij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97503793953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0948/2658/files/37732101506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4557/6088/files/behavior_crisis_intervention_plans_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9872/4769/files/multiplication_counting_principle_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2703/8371/files/fefixirug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7809/0901/files/cheat_engine_apk_ml.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2546/3456/files/arundhati_tamil_movie_songs_free_masstamilan.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_off00006a38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A38 5012 bytes
SHA-256: 3556809877b73e8e28efdd383db77f401f3f5d45b9f53133164af33e6ccdca8f
font_01_sfnt_off00007b5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B5C 10856 bytes
SHA-256: f4520d74e86bae6e717c9757408b54b8c570f75873bb5c888c9942390b6b929b

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