Malicious PDF — malware analysis report

Static analysis result for SHA-256 94b9f769d506051d…

MALICIOUS

PDF

46.3 KB Created: 2020-08-13 22:04:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ae2771f21f3b473c6c79ecdfb365df8 SHA-1: 7d6e13279b85a0f5215f55010334db4b5771be19 SHA-256: 94b9f769d506051d9ee07061423c8ed41e999f691ee888e9359e606194503d91
154 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.cc', which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Spider man 2002 pc game free' and the malicious URL, suggesting a social engineering lure. The PDF also hosts a large number of external links, many pointing to Shopify, likely for SEO manipulation to increase visibility of the malicious content.

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=spider+man+2002+pc+game+free
    • http://files.literaryadventures.net/uploads/1/3/0/8/130874102/937696e3b.pdf
    • http://files.willowsmeltingpot.com/uploads/1/3/1/1/131163976/pimejagisinilamu.pdf
    • http://files.ybcakesandmore.com/uploads/1/3/2/3/132303083/dunajibiviguzafukoji.pdf
    • http://files.unlimitedpotentialstl.com/uploads/1/3/0/9/130969080/720983f.pdf
    • http://files.wannabenomad.com/uploads/1/3/1/6/131606546/9856145.pdf
    • https://cdn.shopify.com/s/files/1/0437/6988/8920/files/41354030548.pdf
    • https://cdn.shopify.com/s/files/1/0432/3239/5426/files/nomurolupidutiseb.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/85459321300.pdf
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/gemapotobonizukok.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9816/files/2097010372.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/pro_calcitonina.pdf
    • https://cdn.shopify.com/s/files/1/0434/6078/8390/files/kikakageponurexapiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/present_simple_and_present_progressive_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/anattalakkhana_sutta.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gijamibumiji.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/53833851475.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/biborosikat.pdf
    • https://cdn.shopify.com/s/files/1/0429/6074/8695/files/kepezigozifuvefasej.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_off0000758f.bin
488864ce1915af7993ee20f47374cc67c4c7c2c34a8e3e89c73cf032950ce84c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x758F 5644 bytes
font_01_sfnt_off000088a9.bin
d3b6a9545b6aab8a862ce44ac2ee06a0a4df927674df3448d77a2e1c2e9d30a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88A9 10436 bytes

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