Malicious PDF — malware analysis report

Static analysis result for SHA-256 5363d6a5a1e6be86…

MALICIOUS

PDF

47.1 KB Created: 2020-08-08 20:46:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f3123f80be7ef676303a3fe093e4cb88 SHA-1: 7c640923de5e21e9c3585786a9f89ea4794caa69 SHA-256: 5363d6a5a1e6be865008e3fe6d69259c1d66d54a3de1e1f7cae46225f2b7750c
152 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The document body contains text related to a Toyota Avalon owner's manual, likely a lure to entice users to click the embedded links. The primary malicious URL is https://ttraff.cc/pify?keyword=toyota+avalon+2020+owners+manual+pdf, which is likely used to redirect users to a malicious site. No scripts were extracted, limiting the analysis of direct payload execution.

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=toyota+avalon+2020+owners+manual+pdf
    • http://files.glassexpressions.in/uploads/1/3/0/8/130814058/9725479.pdf
    • http://files.awakenyuma.org/uploads/1/3/1/4/131453733/xuziluviju.pdf
    • http://dezovezev.cristiansulea.com/uploads/1/3/0/8/130874359/1759082.pdf
    • http://files.mkrishnan.org/uploads/1/3/0/7/130739719/53681a103b5b98d.pdf
    • http://files.sgfaerialfitness.com/uploads/1/3/1/4/131452867/bosereso-gixodigalu-lulomu-rumun.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2277/files/19015167246.pdf
    • https://cdn.shopify.com/s/files/1/0432/8154/7424/files/fantastic_vent_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/1437/4054/files/93054705621.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/cat_verbal_ability_questions.pdf
    • https://cdn.shopify.com/s/files/1/0431/8960/0414/files/wuralimozelun.pdf
    • https://cdn.shopify.com/s/files/1/0434/4145/5254/files/80030275888.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/66889252377.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/17734878970.pdf
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/95867429944.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/migirotoluja.pdf
    • https://cdn.shopify.com/s/files/1/0429/1634/8057/files/58629660901.pdf
    • https://cdn.shopify.com/s/files/1/0428/1561/9239/files/ravosozap.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_off0000787a.bin
e81c6e20c5728d5c8c61b3a43bd8b435196d67f59bfaee42c0583f2499e7ee22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x787A 5664 bytes
font_01_sfnt_off00008bcf.bin
b2d96a2c08c74c2537aea2df71a6cb95bcab82c6597d5303f3acb1cfbd7bc7e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BCF 10420 bytes

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