Malicious PDF — malware analysis report

Static analysis result for SHA-256 006b0238682a550c…

MALICIOUS

PDF

66.5 KB Created: 2020-08-07 00:52:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0bf78813790b087308f2a366d337eab SHA-1: ce594db6a53b40574712a9df2841f9daf4396603 SHA-256: 006b0238682a550c4aa529a8aaeb8db978d33cc07e7e1b75faa9a097aeb2eb9d
162 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.com, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains the text 'Human activities definition pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to improve SEO for malicious content.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=human+activities+definition+pdf
    • http://liwajabab.juliejeanseau.com/uploads/1/3/2/6/132696021/buvunalomosod_pibajabe_raseraxif_muwofetetefamap.pdf
    • http://files.affaircatering4u.com/uploads/1/3/1/6/131606789/zudatukibiguvupipi.pdf
    • http://files.davidpapo.com/uploads/1/3/1/4/131453560/bamexinogojetigipesu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dofupuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6990/6844/files/90898240171.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/dulasoxegozitekeguke.pdf
    • https://cdn.shopify.com/s/files/1/0430/9575/2864/files/64865023199.pdf
    • https://cdn.shopify.com/s/files/1/0433/7215/0942/files/mebolujatikijefe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0674/6011/files/sustaining_spoon_pathfinder.pdf
    • https://cdn.shopify.com/s/files/1/0432/1699/4466/files/gokafolonap.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/3d_coordinate_geometry_formulas.pdf
    • https://cdn.shopify.com/s/files/1/0436/3635/9326/files/vovokifoxa.pdf
    • https://cdn.shopify.com/s/files/1/0434/4253/6604/files/ximotimosopozomobufar.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tizerosotusalasebix.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_off0000bfe9.bin
db580d363492dd72355793471a906f5514a3eecff21d360898973e709e09f9f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFE9 5196 bytes
font_01_sfnt_off0000d18a.bin
8c3f5b0515586482dd0726c376a9fec5e80d572abc56dbe7afe361761bd2bb2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD18A 13940 bytes

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