Malicious PDF — malware analysis report

Static analysis result for SHA-256 6feb9566af1a5381…

MALICIOUS

PDF

50.9 KB Created: 2020-08-01 21:09:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5f8e4fe77f9e3df3d87b407bf12c235 SHA-1: 7a212020185fed8b81375fc6be89a4d8155689dd SHA-256: 6feb9566af1a538147dad07c5d8b9bc64936ebf21a191f77ef0a9b871c356c6b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains heuristics indicating it is a malicious redirector and part of an advance-fee scam, leveraging lottery or prize language. It embeds a link to `ttraff.com`, which is flagged as malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at defrauding the user.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.com/pify?keyword=adventure+time+season+3
    • http://files.risingstars-nursery.org/uploads/1/3/1/4/131407572/gaxonelofet_fugebabadegepu_rumanibodowuj.pdf
    • http://files.crossrdcanine.ca/uploads/1/3/1/4/131407767/9346152.pdf
    • http://files.mariasolebianco.com/uploads/1/3/1/3/131379113/vitulopu-niwetiwa-tujavorowozavud.pdf
    • http://files.evandusenportfolio.com/uploads/1/3/1/4/131437633/gowidogudewofu-lodufesuzugip-gexevi-kakusokitikej.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/64006916751.pdf
    • https://cdn.shopify.com/s/files/1/0435/7586/9599/files/nitozotitupa.pdf
    • https://cdn.shopify.com/s/files/1/0432/2449/8343/files/83882323536.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/champion_air_compressor_parts.pdf
    • https://cdn.shopify.com/s/files/1/0429/3482/9223/files/gafezuvalonumaporenizun.pdf
    • https://cdn.shopify.com/s/files/1/0432/3957/1611/files/43274519272.pdf
    • https://cdn.shopify.com/s/files/1/0432/9648/9632/files/jotuziwujuvemefowaxakaf.pdf
    • https://cdn.shopify.com/s/files/1/0440/7050/2565/files/tegigijoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/9564/5589/files/wimel.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xozujegemuzudileruzodedus.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075ab.bin
ad92b911132cf95604b8efc110e2faaf3018ae4b0e04a40305ddc3120b835e17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75AB 5036 bytes
font_01_sfnt_off000086af.bin
70b232f213b8d0f7a6c818777e00cd48ada1ba781c03d6a1a0aa3a0303b0600d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86AF 13060 bytes
font_02_sfnt_off0000b0a0.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0A0 4324 bytes

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