Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3ff38676cd91b94…

MALICIOUS

PDF

41.6 KB Created: 2020-08-26 03:05:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c88d265f800d34f6ec952bee9155975 SHA-1: 9d029f1a6dfbfc69206dc5816558f00d3378a06b SHA-256: d3ff38676cd91b94257a0e1a21f03db3a599878c2b9435d512b531b7e7ccb1f9
128 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm, containing numerous external links, with a critical finding indicating a link to a known malicious redirector. The document body, though partially corrupted, contains a reference to the redirector URL. The presence of a visual download button further supports the lure. The primary malicious URL identified is https://ttraff.com/pify?keyword=dragon+ball+z+complete+series+torrent, which likely serves as a gateway to further malicious content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=dragon+ball+z+complete+series+torrent
    • http://tuveguk.upscaleresale4kids.com/uploads/1/3/2/8/132814930/leligujozix.pdf
    • http://files.harrisburghigh.org/uploads/1/3/1/0/131070888/4399537.pdf
    • http://bukoper.gurugarammasala.com/uploads/1/3/0/7/130740609/5005090.pdf
    • https://cdn.shopify.com/s/files/1/0454/0589/6872/files/posizigamef.pdf
    • https://cdn.shopify.com/s/files/1/0430/5803/6889/files/56548490550.pdf
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/79690565191.pdf
    • https://cdn.shopify.com/s/files/1/0429/4197/2646/files/cause_and_effect_of_teenage_pregnancy_in_the_philippines.pdf
    • https://cdn.shopify.com/s/files/1/0431/2308/1378/files/affine_geometry_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/1451/9966/files/34774554554.pdf
    • https://cdn.shopify.com/s/files/1/0434/7140/5222/files/musico_abandonado_ferido_e_esquecido.pdf
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/47823996985.pdf
    • https://cdn.shopify.com/s/files/1/0431/1538/0892/files/tatalaksana_asidosis_respiratorik.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bad.bin
40a3083c9a26d93693d5b7476a9e81637199d957c9719b015ca2981f5af05b1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BAD 5444 bytes
font_01_sfnt_off00006e1c.bin
cf8d2a991f73efb5c6324277160102c6cbe557827df3c2928c7066011b44dae5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1C 13900 bytes

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