Malicious PDF — malware analysis report

Static analysis result for SHA-256 910789c5b1299bb5…

MALICIOUS

PDF

40.3 KB Created: 2020-08-06 09:04:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe049b9f7dec00bbbb9267082393907a SHA-1: bd176adccbae1f9654e1b61a0d5b948e8b668aa9 SHA-256: 910789c5b1299bb56118be6d1d09d14c0a67b23c09597d5f6b97dc0bd2e59f5a
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=almas+gemelas+libro+pdf+gratis'. This URL is likely part of a phishing or scam campaign designed to redirect users to malicious content. The document also contains a large number of external PDF links, many hosted on Shopify, which is flagged as a link farm, further indicating a deceptive purpose.

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.ru/pify?keyword=almas+gemelas+libro+pdf+gratis In PDF document text
    • http://files.mackinawvet.com/uploads/1/3/0/8/130873822/2234604.pdfIn PDF document text
    • http://files.brew-tech.org/uploads/1/3/1/8/131856860/c266cca.pdfIn PDF document text
    • http://ladijulol.stpetersmorrison.com/uploads/1/3/2/3/132303189/kaserowovenagilek.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/1/0440/4648/3606/files/bokerufivolefibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1747/8044/files/87052711850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7786/8443/files/lobawebonalipogap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7671/3637/files/zotitivujofus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/dubugud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/eclectic_counseling_approach.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9217/3217/files/sokavebisaleteware.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0455/8488/files/kegorozirimur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4228/2399/files/98933331875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1642/1529/files/wezozakibafazif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8049/8841/files/55116553629.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 2

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_off00005da0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA0 5492 bytes
SHA-256: 2212ee80aeb773fa5ddeb2221aebf19a3a07634719f243b239b81f73ac967b25
font_01_sfnt_off0000702d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x702D 11268 bytes
SHA-256: dd45134830fe8583d98bc4bffb1f11aa049ca661912156628e5aee54db370163

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