Malicious PDF — malware analysis report

Static analysis result for SHA-256 46cf1c5114133f5b…

MALICIOUS

PDF

38.5 KB Created: 2020-08-09 01:30:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d6cf9d7eacc75da247f00d6fcea8587 SHA-1: 2e27975aebf3f83724bdc4a6f7c7d0bff65928dc SHA-256: 46cf1c5114133f5b0e259d18dae2203bae1a0c75e6a305e78e2db97de884a75d
152 Risk Score

Malware Insights

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

The PDF contains a link to a redirector, ttraff.cc, which is known to host malicious content. The document body, though heavily obfuscated, contains the same URL and references "strategyzer books pdf", suggesting a lure to download potentially malicious content. The presence of numerous external PDF links further indicates a link farm or redirection scheme designed to obscure the ultimate destination.

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=strategyzer+books+pdf
    • http://files.dmaysco.com/uploads/1/3/1/6/131606262/a295615b0f.pdf
    • http://files.downeydesignllc.com/uploads/1/3/0/8/130874088/tepavur.pdf
    • http://files.daydreamandwonder.com/uploads/1/3/1/3/131380850/e45e13e.pdf
    • http://files.jazdesignphotography.com/uploads/1/3/0/8/130814459/9010870.pdf
    • http://files.yorkmorris.com/uploads/1/3/1/4/131410479/guretubunakewaz.pdf
    • https://cdn.shopify.com/s/files/1/0440/4133/9045/files/22860329441.pdf
    • https://cdn.shopify.com/s/files/1/0433/5039/2984/files/77873935651.pdf
    • https://cdn.shopify.com/s/files/1/0431/1983/7333/files/fipumitojexila.pdf
    • https://cdn.shopify.com/s/files/1/0438/8388/8808/files/8020230749.pdf
    • https://cdn.shopify.com/s/files/1/0430/2913/5514/files/bofajakamojegaporomu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/anova_minitab.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/99486921240.pdf
    • https://cdn.shopify.com/s/files/1/0434/0629/5201/files/totesoxunu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2051/5488/files/3523016366.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049c1.bin
bf1fb36166676ed183a64b4de5bff1e2ac0b0936ba313426024fe1150b75a711
pdf-font-stream PDF embedded font (sfnt) at offset 0x49C1 5268 bytes
font_01_sfnt_off00005bc9.bin
b3598d4861e888e2011dcc4ee125c47cec69ad92fb17cd5c16ac83ceac73fbb3
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC9 10052 bytes
font_02_sfnt_off00007dfc.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFC 4324 bytes