Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7886ff05565bfb6…

MALICIOUS

PDF

117.2 KB Created: 2020-08-22 09:19:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 21b2b4efe74a9f71b4f863895b74e9c8 SHA-1: f37ecd5f443fe5f2769430fe4e686c6923d448be SHA-256: a7886ff05565bfb6f242b859316fde46f51cfcb69cb5c7283ec8651175bba8b1
130 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector to a known malicious domain, ttraff.com. The document body text, though heavily obfuscated, contains the URL and a lure related to a boiler manual. This suggests the document is designed to trick users into visiting a malicious website, likely for phishing or malware distribution.

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=baxi+combi+boiler+instant+105e+manual
    • http://files.westsideindustrialpark.com/uploads/1/3/2/6/132696044/f6dc45448ed.pdf
    • http://files.fionawade.com/uploads/1/3/1/3/131397996/tasawexoru-tuniguko-lidiraxoful-gaxuju.pdf
    • http://files.venablestheatre.ca/uploads/1/3/1/1/131164431/9126231.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/caminito_tango_partitura.pdf
    • https://cdn.shopify.com/s/files/1/0430/8788/8551/files/ensemble_empirical_mode_decomposition.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kividerinogofigizunewif.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/fexejejadeb.pdf
    • https://cdn.shopify.com/s/files/1/0431/0797/5330/files/rixesazinekize.pdf
    • https://cdn.shopify.com/s/files/1/0431/5797/9304/files/16021459026.pdf
    • https://cdn.shopify.com/s/files/1/0434/5187/5494/files/tubatorotabogideminobug.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/8172011999.pdf
    • https://cdn.shopify.com/s/files/1/0435/4228/2394/files/nonej.pdf
    • https://cdn.shopify.com/s/files/1/0450/0629/1102/files/xolinizari.pdf
    • https://cdn.shopify.com/s/files/1/0432/2898/7547/files/2804828667.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012a83.bin
36e6277a0723b6c4cd09c448633d1b6c9c3b00922417a4539959ac9e9ee12777
pdf-font-stream PDF embedded font (sfnt) at offset 0x12A83 18080 bytes
font_01_sfnt_off0001646d.bin
614f92b9a36e623e044bf0b5b4daf325cad7e70e4b12c2bb9dc9cc63850c2cce
pdf-font-stream PDF embedded font (sfnt) at offset 0x1646D 5404 bytes
font_02_sfnt_off000176b9.bin
2abbda26cc7261cdeb208c03c4208f7c98288a9b0573a75150eab5a4febfa57a
pdf-font-stream PDF embedded font (sfnt) at offset 0x176B9 12880 bytes
font_03_sfnt_off0001a132.bin
a987449a195854f2da8fc9be4bfa523ba37347d04953fab90dd70ddb79372158
pdf-font-stream PDF embedded font (sfnt) at offset 0x1A132 16876 bytes
font_04_sfnt_off0001b86f.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x1B86F 4324 bytes