Malicious PDF — malware analysis report

Static analysis result for SHA-256 166deea79e2b00dc…

MALICIOUS

PDF

59.9 KB Created: 2020-07-31 08:44:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: adfe1b802ae1112774404b8def227cc4 SHA-1: c97072f3e77540a77fe6c451414f5b635953d3b8 SHA-256: 166deea79e2b00dc109dc863c12e201fe064bbaf228b436391c7cf645b826fc2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating it links to malicious redirector infrastructure, specifically `https://ttraff.cc/pify?keyword=babylonian+cuneiform+alphabet+pdf`. The document body, though heavily obfuscated, suggests a lure related to 'Babylonian cuneiform alphabet pdf'. The presence of embedded URLs and the ML classifier strongly indicate malicious intent, likely for phishing or to download a second-stage payload.

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=babylonian+cuneiform+alphabet+pdf In PDF document text
    • http://files.jacksonsatjedburgh.co.uk/uploads/1/3/1/3/131381464/7715557.pdfIn PDF document text
    • http://files.mosfellsdalur.is/uploads/1/3/0/7/130775304/wipoponavaxak.pdfIn PDF document text
    • http://files.decojewelry.net/uploads/1/3/1/3/131379792/b788c38827e.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/1/0430/6547/5226/files/melukemovevudalafusono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5727/5299/files/navonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8159/6066/files/koxokiporoxijivogafixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3997/3788/files/92702258159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7682/0890/files/96827121142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0359/9272/files/rolekusosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4628/1120/files/penonutitamer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pusowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4259/3189/files/98714255365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5395/5742/files/mugofolavawan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2264/6422/files/latiwifidolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0935/1575/files/30902713050.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 3

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_off0000ac39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC39 5392 bytes
SHA-256: f0c1da39e463dfccf9f567c5ce333e22ce9292f373c6f220b4786a805bb23cd2
font_01_sfnt_off0000be5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE5B 10484 bytes
SHA-256: 7b4ace7554d7c1bd31522d347af31dd1e43307b0455810d5b006b81d5d70f21c

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