Malicious PDF — malware analysis report

Static analysis result for SHA-256 000b9bee69810789…

MALICIOUS

PDF

41.8 KB Created: 2020-09-09 18:39:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d92420af27af9085cc662e71ddfdd82 SHA-1: f7925f3020d0b57a9c8525944362ce91af51e6e1 SHA-256: 000b9bee69810789706053a06b5f3105c34737fcb7c4fc3f955bf78b1bd657e7
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded URLs, with a critical heuristic firing indicating it's a malicious redirector link farm. The primary malicious URL identified is 'https://ttraff.club/wix?keyword=muscles+of+the+body+anatomy+pdf', which is presented as a search result. The document's structure and the heuristics suggest an attempt to lure users to malicious sites under the guise of providing anatomical information.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.club/wix?keyword=muscles+of+the+body+anatomy+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/17ce20_46c859d33d5c4039a46a9a2fa313ade3.pdf
    • https://static.usrfiles.com/ugd/e8506d_7ae2ac1764fd4f9392cd0ab5c75afc95.pdf
    • https://static.usrfiles.com/ugd/f91cf1_0ebbdfe06eb84f03ad0a0aab48a075ba.pdf
    • https://static.usrfiles.com/ugd/2994dd_8f63f50513ac470cb47529f34d6ddcbb.pdf
    • https://static.usrfiles.com/ugd/b8c837_978807e56de54f349a07b62d60a29d97.pdf
    • https://cdn.shopify.com/s/files/1/0434/6180/4198/files/govubifitipijegali.pdf
    • https://cdn.shopify.com/s/files/1/0431/3825/2957/files/anticonvulsivantes_mecanismo_de_accion.pdf
    • https://cdn.shopify.com/s/files/1/0463/0367/4530/files/programme_cercle_de_la_forme_ornano.pdf
    • https://cdn.shopify.com/s/files/1/0432/7034/0772/files/80715708120.pdf
    • https://cdn.shopify.com/s/files/1/0438/2490/6400/files/sports_illustrated_college_football_betting_guide.pdf
    • https://static.usrfiles.com/ugd/f1d680_f4c177f7bebe47c6a5ffaa494b209131.pdf
    • https://static.usrfiles.com/ugd/930050_20f5b70142ca40ff9333d79847e204b3.pdf
    • https://cdn.shopify.com/s/files/1/0431/3497/6149/files/74369454473.pdf
    • https://cdn.shopify.com/s/files/1/0430/9277/0977/files/chhattisgarhi_tik_tok_video_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0430/9050/9975/files/babojoni.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065f5.bin
b6f94d0a36d11ad6a34aef69d11b4c97ee55b5ce8890c66975096ddbd36f8180		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65F5 5544 bytes
font_01_sfnt_off000078be.bin
4e6f850ea9fbdea4c546ae668dd2dc91dcc08c1431fd1ebdfcc9bdc6b974bf65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78BE 9928 bytes

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