Malicious PDF — malware analysis report

Static analysis result for SHA-256 af3745888e8384c2…

MALICIOUS

PDF

46.2 KB Created: 2020-08-06 03:16:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe66047d1644500b7993ca408dfc3d2a SHA-1: 2a338176aeda487af92080f9efbf325e276b5167 SHA-256: af3745888e8384c2207147a1142c91a89bef8930e38eebd9e5493bd361f5bfd0
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files, indicating a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final malicious destination. The document body, though partially corrupted, contains the phrase 'List of biotechnology products pdf' and the URL that triggered the malicious redirector heuristic, reinforcing the lure.

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=list+of+biotechnology+products+pdf
    • http://files.bodyworkceus.net/uploads/1/3/1/6/131607029/6821935.pdf
    • http://files.joantrinhpham.com/uploads/1/3/2/8/132814241/9016462.pdf
    • http://pusavor.frederickwarner.com/uploads/1/3/0/7/130775432/zonizinedozu_jenipifiti.pdf
    • https://cdn.shopify.com/s/files/1/0431/7279/0432/files/55753132980.pdf
    • https://cdn.shopify.com/s/files/1/0433/4541/2245/files/rotation_matrix_3d.pdf
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/zawuxagixupukururuva.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1741436775.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rosetotirumeza.pdf
    • https://cdn.shopify.com/s/files/1/0431/7714/8571/files/15676200962.pdf
    • https://cdn.shopify.com/s/files/1/0441/0087/8488/files/45987965750.pdf
    • https://cdn.shopify.com/s/files/1/0431/8871/5682/files/drone_visuo_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/5503/7093/files/61948893442.pdf
    • https://cdn.shopify.com/s/files/1/0431/4297/1553/files/beziruwolameri.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/texogigadubu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6114/8836/files/step_up_to_step_2.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_off00007758.bin
e7ce0b6b4121378e454cf8e4ebe62f2aa751993f87aa28ccab2277b444be3874		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7758 5388 bytes
font_01_sfnt_off000089b0.bin
28b804e942774714b3cc2b1a1ceeeeebe770751baa991bd9a3d260b6dc8b88fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89B0 10052 bytes

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