Malicious PDF — malware analysis report

Static analysis result for SHA-256 e36c7297e2a2b729…

MALICIOUS

PDF

41.0 KB Created: 2020-08-18 17:28:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f099a1d9bd2aaeda64572debbd00d685 SHA-1: 82c75087bb163b00655e8fa4a71947f7c45062c2 SHA-256: e36c7297e2a2b7295c2d38c1886f01b7195ab61c339f4d53619aef2e624d0aa2
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm, with many pointing to Shopify domains. One of these links, however, redirects to `ttraff.ru`, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL, suggesting a lure to a malicious site. The ML classifier also 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=saxon+math+course+3+test+answers In PDF document text
    • http://files.arturofuentes.com/uploads/1/3/2/6/132695636/d65608ebee2e0e.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/1/0434/0239/5813/files/array_in_c_programming_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6735/9900/files/vuwerosokobutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/xojex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4275/0114/files/greenback_boogie_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/allen_ginsberg_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1007/2481/files/learning_robotic_process_automation_uipath.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7247/1718/files/78461483534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0757/3157/files/labubudozavelujewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0315/8433/files/harper_biochemistry_30th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0652/4566/files/body_parts_in_chinese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5044/2652/files/vakutuxekowojadamiraj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9665/4489/files/zijufikudu.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 3

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_off00006124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6124 5432 bytes
SHA-256: ac41f9286812ec506e7ac766405fc14792f028fdb4efe094f750334bda7f7f63
font_01_sfnt_off00007377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7377 10524 bytes
SHA-256: 8feff42cf68d6a37f76ea7501af62236a484f97012b5e2edfe1b78093c5c81dd

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