Malicious PDF — malware analysis report

Static analysis result for SHA-256 1efc253a73aff82c…

MALICIOUS

PDF

41.8 KB Created: 2020-08-05 05:39:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6ed37818403dfaa0302b67118ccd81cc SHA-1: 7156e7692974233e3c6b36b6858c90c26f968e2d SHA-256: 1efc253a73aff82c3a64f9862e6393675701d9094d196f9f1bf4c1c6e11c2ca1
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific URL that redirects to a malicious domain, likely to lure users into a phishing or scam scheme. The document body text, though partially corrupted, contains keywords related to finance and blockchain, suggesting a pretext for the malicious link. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the redirection to a known malicious infrastructure.

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=goldman+sachs+blockchain+pdf+2020 In PDF document text
    • http://files.dianesawatzkyphotography.com/uploads/1/3/0/9/130969768/madosivijukusarazi.pdfIn PDF document text
    • http://files.palmcoastflautorepair.com/uploads/1/3/1/8/131856186/metegug_sogokasipegoka_fedasile_buwuwakapol.pdfIn PDF document text
    • http://files.harderscharters.com/uploads/1/3/0/7/130775588/belonulole-repite-belexavo-pisufukunikufip.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/1/0432/9691/5621/files/90529608241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8491/3563/files/44277152469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/mavizaxitegopumemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/american_sniper_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/datidiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3518/1734/files/sapupenafubidexurexizidoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0673/0138/files/ponoropojebaleboz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5715/1129/files/20053331328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/93478121834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1149/7366/files/79996631040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2702/1480/files/69233647411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1385/7692/files/38662348880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3549/0461/files/37887457900.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_off000062f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F6 5808 bytes
SHA-256: 3c83a708e5bb52197d81778afca9855463308d2c872cf2b1f20bc0c8917bdd0c
font_01_sfnt_off00007697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7697 10536 bytes
SHA-256: 5483f9ec78be21c0783db138f8b8432699d09baf277e05dce205633d3d1cbf86

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