Malicious PDF — malware analysis report

Static analysis result for SHA-256 bddc203bbbb85dec…

MALICIOUS

PDF

59.5 KB Created: 2020-08-12 06:54:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 784d5bd16ed8e5dc24a53c2ef05614e0 SHA-1: 6c71a63d8e1159b102ed9691b2edbf5f557a08e6 SHA-256: bddc203bbbb85dec1d4fc071e6d091ab48983fd914da51b72fe6ef256a9354e7
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains URLs that are part of a link farm, suggesting a social engineering tactic to drive traffic to malicious sites. The primary malicious URL identified is https://ttraff.cc/pify?keyword=bosch+automotive+electronics+book+pdf, which is likely used to redirect users to a further malicious destination.

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.cc/pify?keyword=bosch+automotive+electronics+book+pdf
    • http://files.choisnuts.com/uploads/1/3/1/4/131483371/9292491.pdf
    • http://files.widehorizonsretreat.com/uploads/1/3/1/0/131070993/1810992.pdf
    • http://files.fixmyfeet.co.za/uploads/1/3/2/8/132815828/popemotin.pdf
    • http://files.bigheadtechnologysolutions.com/uploads/1/3/1/4/131409861/6944754.pdf
    • https://cdn.shopify.com/s/files/1/0428/7175/0822/files/86394988588.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/peridega.pdf
    • https://cdn.shopify.com/s/files/1/0435/3048/5915/files/5121640381.pdf
    • https://cdn.shopify.com/s/files/1/0429/6392/7203/files/37151066482.pdf
    • https://cdn.shopify.com/s/files/1/0428/3963/8179/files/34048835887.pdf
    • https://cdn.shopify.com/s/files/1/0427/4677/3660/files/afinidades_electivas.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tuwaz.pdf
    • https://cdn.shopify.com/s/files/1/0439/3621/9291/files/vupen.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18813115042.pdf
    • https://cdn.shopify.com/s/files/1/0430/7596/0985/files/92571942384.pdf
    • https://cdn.shopify.com/s/files/1/0437/8954/9729/files/antibiotic_resistance_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/4553/5400/files/soccer_attacking_drills.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_off0000a0e8.bin
a711171d261287bb2febf91018a86b76815753a1318609c928cfbc9afda02d7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0E8 5708 bytes
font_01_sfnt_off0000b42b.bin
e7b3cd8125c712f85d6c1d14da8cbc0b4ad496c39406f3d4251db69347c4bc59		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB42B 14296 bytes

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