Malicious PDF — malware analysis report

Static analysis result for SHA-256 b386277ccd14152a…

MALICIOUS

PDF

58.0 KB Created: 2020-08-08 15:42:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6ad5a94d6670eafb7b699ee6b0ed7903 SHA-1: 2d44de65a805a128098506d244f4c64b319e573a SHA-256: b386277ccd14152a9d5431884636c90f260d27546c786dd3f4fba9092e4a011a
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used to create link farms for SEO manipulation or to redirect users to malicious sites. One of the primary embedded URLs, 'https://ttraff.ru/pify?keyword=apprendre+python+site+du+zero+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing its role as a 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/pify?keyword=apprendre+python+site+du+zero+pdf In PDF document text
    • http://files.donthesitate.org/uploads/1/3/1/3/131383838/jewojevasixase-wobidikudomap-bajomizet-fiwogemus.pdfIn PDF document text
    • http://files.hawaiianhealers.com/uploads/1/3/0/8/130815017/af264449f2f59.pdfIn PDF document text
    • http://files.deluxefd.net/uploads/1/3/1/4/131437044/muvikemefapususoxif.pdfIn PDF document text
    • http://tazaga.submergeradio.com/uploads/1/3/0/8/130873851/pududuvenezo_muxudojivuvux_kunoz_xigajonu.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/1/0430/8742/9785/files/7713383394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1777/0904/files/ritipifutodekanobabotadew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5978/9472/files/watupetemoxolepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3900/6615/files/nawadexedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4194/2678/files/godsmack_go_away.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vixegenosevisime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/sifitogepobasotosujuwet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3902/2485/files/causality_models_reasoning_and_inference_2nd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3223/9528/files/82002894283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/dafixanuzunaxizerekuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0252/7895/files/80226707298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6703/1200/files/1138877790.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_off0000a394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA394 5028 bytes
SHA-256: 36ad57124980c6b88229c71fbc1c6b9258122f095613d638dacc3b67721b69c1
font_01_sfnt_off0000b4bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4BF 12184 bytes
SHA-256: d5157d2cc24dc052406915b4b75655405c82768f7e21f991159081d536f848bc

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