Malicious PDF — malware analysis report

Static analysis result for SHA-256 7990093e9b1bfacb…

MALICIOUS

PDF

46.7 KB Created: 2020-08-21 03:44:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b63f85b04978ceed61645134eb09ac16 SHA-1: d24a0d094daf45ff5e1f875a704af0e3dff8ff06 SHA-256: 7990093e9b1bfacbbc25c747945b6680ae2d64bed103a03855bccf2f8f9e9ef1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, pointing to the URL https://ttraff.cc/pify?keyword=altar+of+sacrifice+poe+guide. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The presence of embedded links and the ML classifier's high confidence score support a malicious intent, likely to redirect users to a compromised site or phishing page.

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=altar+of+sacrifice+poe+guide In PDF document text
    • http://files.publichealthmuseum.org/uploads/1/3/1/3/131384789/a826b1b39.pdfIn PDF document text
    • http://vatoxuj.algagen.com/uploads/1/3/1/1/131163927/xonibamozoj.pdfIn PDF document text
    • http://files.greywolfhowling.com/uploads/1/3/1/6/131606366/4670962.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/1/0437/0271/4533/files/19912069883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/painless_evidence_based_medicine_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/34257733610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6054/3138/files/xobirisoxofijavejuxefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2081/2441/files/lowes_fairbanks_ak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4927/1975/files/1472809542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74098669839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8656/0936/files/2013_honda_civic_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/java_programming_with_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4852/5206/files/82281615302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6599/7472/files/hindu_baby_boy_names_book.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_off0000788c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x788C 5312 bytes
SHA-256: 6ff1f67c9650ecc90be7cc4b1f5cf25a5e011b0a9c20c046e76e30cb329f6b27
font_01_sfnt_off00008aa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA4 10288 bytes
SHA-256: d44017d9a1b6df45699ad8c998c11a117060cefb95ed06b11a00ea23fc343dcc

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