Malicious PDF — malware analysis report

Static analysis result for SHA-256 34ff2f36842273de…

MALICIOUS

PDF

41.7 KB Created: 2020-08-19 19:42:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1213850681555017e6d157de5420a665 SHA-1: 1d577a160a61d727a5ea0e51c15217bade47ad2f SHA-256: 34ff2f36842273de2e6ff501462a6bd307484c4417056375b27c305d1865e150
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link redirects to known malicious infrastructure at ttraff.ru. The ML classifier strongly indicated maliciousness. The document body text, though garbled, contains the URL that is also present in the malicious redirector link, suggesting it's a lure to entice users to click.

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=augmenter+sa+confiance+en+soi+pdf In PDF document text
    • http://files.thejohnroannut.org/uploads/1/3/1/6/131637850/3502088.pdfIn PDF document text
    • http://files.empyreanresearch.org/uploads/1/3/1/4/131408256/6793108.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/1/0430/4227/5485/files/vedagaxisagafojiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2807/0052/files/dapesukevofekexewavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4430/5061/files/78910090377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9802/1793/files/jagage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3192/4629/files/zan_autopurge_crash_protector.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/6257/7563/files/cash_flow_statement_template_microsoft_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2811/7661/files/58050536161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6740/0601/files/16345363576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71895612735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9140/9562/files/vulemunozabawiwidi.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 6

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_off0000608d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x608D 5432 bytes
SHA-256: 8ece7ec0e05848b2ce641c4f5aa02ccffcd57127d08cab1ffa43a0e2fbc5bf97
font_01_sfnt_off000072ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72EA 11880 bytes
SHA-256: 7787f5e93bef709b846cb757ec42be5de9b6d0d6a27f7b555107c1b913282c49

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