Malicious PDF — malware analysis report

Static analysis result for SHA-256 a36a622a7f37389a…

MALICIOUS

PDF

40.2 KB Created: 2020-07-31 22:56:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f0497d5414f525f75a0dccfd47d53b9 SHA-1: a582eb41b2416c87d20238a095dcdfb425887066 SHA-256: a36a622a7f37389aec48e1fc15bc64d9b6a83a7f88822e96679e23dec1d368bf
194 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing numerous external links. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=amumu+support+build'. The document body, though heavily obfuscated, also contains this URL and other links to Shopify-hosted PDFs. This suggests the primary intent is to redirect users to potentially harmful content or to manipulate search engine results.

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=amumu+support+build In PDF document text
    • http://files.bartlettpaintingpros.com/uploads/1/3/0/8/130814258/lifax.pdfIn PDF document text
    • http://files.joveneslibres.org/uploads/1/3/1/0/131069887/f9f0aba6ef.pdfIn PDF document text
    • http://files.theartoftoast.com/uploads/1/3/1/3/131380511/vowezagejifuru-guvidevowowawov-fususejemudi.pdfIn PDF document text
    • http://files.louisvilleccc.org/uploads/1/3/0/8/130813897/c2e86b82384c2.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/1/0437/6713/6413/files/veguga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0262/6202/files/59388528906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3907/2161/files/26616313264.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4993/4229/files/80165386596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0209/3987/files/43916266525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/jepojolukaneliraki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3712/0933/files/rikoginidelizeso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/boxetadugabififaneno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2880/6808/files/visil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0083/7782/files/koraladabegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/judetuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4388/9052/files/85748721880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/semirezutolujufifuzodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/forexuxafade.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 7

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_off00005834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5834 5024 bytes
SHA-256: 2f3f108006cc92808ee518aa94f7105520c4688045c6897df4f12d7cbc8f3022
font_01_sfnt_off0000692a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x692A 13552 bytes
SHA-256: 8d2da91c21c7b98fb8cce857f8f5ecfe93a6accecf0ec078b0267371d654f881

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