Malicious PDF — malware analysis report

Static analysis result for SHA-256 312a59fbc27d56b6…

MALICIOUS

PDF

36.1 KB Created: 2020-08-21 19:21:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eba5613e865b6b4904519bfccc392918 SHA-1: 44543867d8da796a5af4941b4c3f49dec7dfb2dc SHA-256: 312a59fbc27d56b656374fe51ac3369e8533b419724f9608ce44bbea609c9f77
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a malicious site. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly indicated maliciousness.

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=girl+sad+shayari+pic In PDF document text
    • http://nopezoz.emporiacofchrist.org/uploads/1/3/1/3/131398140/jabinuxaxomufut_nefijotuju_fajokekazalelu_ditojawevamidej.pdfIn PDF document text
    • http://files.westlinnalcohol.com/uploads/1/3/1/6/131606331/nimofizopora-fepixi.pdfIn PDF document text
    • http://files.valerianaq.com/uploads/1/3/0/7/130740521/2238690.pdfIn PDF document text
    • http://files.barrongafford.org/uploads/1/3/0/8/130813755/tubosenokif-kemategivet-menafubiditom.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/1/0437/2935/4917/files/tudinoxunepotarozalaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0290/4222/files/64902216203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xodowowesibaxen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4715/7914/files/7850488731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3458/1911/files/72508995662.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7642/7686/files/baputizamevutuweludefon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4156/8421/files/amravati_mandal_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1281/6026/files/td_ameritrade_thinkorswim_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2632/5402/files/ladisoropom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8392/2585/files/mario_maker_2_buried_stones_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/93341754180.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_off000051de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51DE 5292 bytes
SHA-256: e4e0f7612007e6a8173252e6ab0041dd3f879f99ba772252c44f39397ba68a1a
font_01_sfnt_off000063d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D4 9308 bytes
SHA-256: 2edda085cd125932295efb3cc1c6048b60ed29fd7d81552c0d9ec656b66796af

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