Malicious PDF — malware analysis report

Static analysis result for SHA-256 7927226e13d5a927…

MALICIOUS

PDF

49.8 KB Created: 2020-08-15 08:09:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 85bf06153c1ede72111e8dc2969ba68c SHA-1: cb2555b4cf3169bb728914b815336fb249f92a39 SHA-256: 7927226e13d5a927e061b76ff7a29a15abc3efb9d6386818ab6e834c71164290
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body and heuristics indicate a link farm strategy, likely intended to lure users to malicious sites under the guise of providing PDF documents. The primary malicious IOC is the redirector URL used for the lure.

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/wb?keyword=vegetable%20tanning%20process%20pdf In PDF document text
    • http://files.momtomomsales.net/uploads/1/3/0/7/130775907/babawutu.pdfIn PDF document text
    • http://jaleful.gamesofcolors.com/uploads/1/3/2/8/132814930/sajep.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/1/0435/9582/5314/files/big_data_complete_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0182/2875/files/86803470854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9708/7390/files/iehp_prior_authorization_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8039/3639/files/xibemitexuxusisuwarob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6858/7174/files/personal_finance_keown_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6100/8791/files/signs_and_symptoms_of_heart_failure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/puneson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2707/7032/files/96067560880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0182/1859/files/deramusujafadomusejuvelal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9340/2524/files/gibovavanowawameliledaxaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0107/0247/files/27088972352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6657/2443/files/boperixafev.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_off00008489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8489 5428 bytes
SHA-256: 921f996bc35377e983c4c80379f5654579c1ee79f8be56d4ffa41adc93a47ab4
font_01_sfnt_off00009703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9703 10404 bytes
SHA-256: 0236a3b2950e3db6860dabf85599aed1f7e9ab42da0c436833704230afe45531

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