Malicious PDF — malware analysis report

Static analysis result for SHA-256 8edf283a8abfd9d8…

MALICIOUS

PDF

39.6 KB Created: 2020-08-07 14:59:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68ca40ff959d098ab9ecdd43aec90236 SHA-1: 4953418480a0bb2c051ea6f84d0678a200683ea5 SHA-256: 8edf283a8abfd9d8d3ef4922cd2925b6b461ea39f88c4b0fe71d907590c11408
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=arifureta+novela+pdf+descargar'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many hosted on Shopify, further supports the SEO link farm tactic, designed to obscure the malicious redirector. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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=arifureta+novela+pdf+descargar
    • http://xagap.gardenmda.info/uploads/1/3/1/4/131453598/5879795.pdf
    • http://files.kcpanhel.com/uploads/1/3/2/8/132815961/1055807.pdf
    • http://files.jamesculbertsonphotography.com/uploads/1/3/2/8/132814342/rowobekobedo.pdf
    • http://vonaliwe.inlandnwroutes.com/uploads/1/3/0/7/130740013/jifumoganagemeso.pdf
    • https://cdn.shopify.com/s/files/1/0428/6713/0534/files/visusutoxo.pdf
    • https://cdn.shopify.com/s/files/1/0440/6693/0840/files/kenexoxa.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/9132313335.pdf
    • https://cdn.shopify.com/s/files/1/0436/2135/1587/files/pointage_antenne_canalsat_afrique.pdf
    • https://cdn.shopify.com/s/files/1/0439/4775/3640/files/51901442688.pdf
    • https://cdn.shopify.com/s/files/1/0432/6332/8411/files/dasuzoviviziru.pdf
    • https://cdn.shopify.com/s/files/1/0430/6776/8981/files/osrs_family_crest_quick_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/1311/0951/files/bomugim.pdf
    • https://cdn.shopify.com/s/files/1/0429/5386/7427/files/45651606833.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91025233068.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wifufokamavobopizevotug.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f39.bin
87df89bd4064aabb176a0def28c0e4ddd0362ddd53ce5fd20c582b8d11720ff0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F39 5252 bytes
font_01_sfnt_off00006127.bin
d49f9285f76bb1169cfed329df6a144f14376ea13a79f95e611038c966aae9e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6127 10156 bytes
font_02_sfnt_off00008395.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8395 4324 bytes

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