Malicious PDF — malware analysis report

Static analysis result for SHA-256 01114f964370b2cf…

MALICIOUS

PDF

50.8 KB Created: 2020-08-07 14:48:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55d948e9273d50168eb3048c4e35e412 SHA-1: a448e493cb97616e54b333c929c869b1d4bebe19 SHA-256: 01114f964370b2cfaf6183a46c0a25e27dbde6e78693335935c3111c8b1f2971
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary mechanism for delivering the payload. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=manual+blender+2.+79+portugues+pdf
    • http://files.iooftxgreaterhouston.org/uploads/1/3/1/3/131384113/2729096.pdf
    • http://files.desmidtbuilders.com/uploads/1/3/2/6/132695517/e1fa54e7.pdf
    • http://files.aliveleadership.com/uploads/1/3/0/8/130874295/zepoxa_rawavedazerune_judif_mazurovewizuk.pdf
    • http://files.brownperformancecoaching.com/uploads/1/3/1/3/131398449/5613315.pdf
    • http://files.eltprodev.com/uploads/1/3/2/3/132302780/a2b571a8efd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3841/6801/files/19009236318.pdf
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/95600094301.pdf
    • https://cdn.shopify.com/s/files/1/0430/9155/8551/files/vewufudiliwewonuma.pdf
    • https://cdn.shopify.com/s/files/1/0432/5995/3312/files/21016186703.pdf
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/wodikatataridib.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/poe_profile_zizaran.pdf
    • https://cdn.shopify.com/s/files/1/0436/7892/4953/files/design_a_bcd_to_7_segment_decoder.pdf
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/fipesugapuxadu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasamonuje.pdf
    • https://cdn.shopify.com/s/files/1/0439/4021/6987/files/kitab_barzanji_bahasa_arab.pdf
    • https://cdn.shopify.com/s/files/1/0431/0456/7450/files/jerabulufolenavavegaw.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000868b.bin
b8eb9d98bb684838b91dde1c3b185894424cd226c5f1a4d9d0814dd0d434c512		 pdf-font-stream PDF embedded font (sfnt) at offset 0x868B 5752 bytes
font_01_sfnt_off00009a3f.bin
301908551948a7663f062ae6a2c0191239017ced3105c790dd22f541f54d5b55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A3F 10504 bytes

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