Malicious PDF — malware analysis report

Static analysis result for SHA-256 14e58583053dd9c7…

MALICIOUS

PDF

45.8 KB Created: 2020-08-19 02:55:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db8d27b19fdfadcb76227ef542320b03 SHA-1: 5c7ee8eb338eb576be9a163a24fe1c1fdafd46d7 SHA-256: 14e58583053dd9c7ee624d28cf6c84469e612fe9a80354c1620cc8eb8958f39b
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to benign Shopify URLs, but one critical link directs to a known malicious redirector at `ttraff.com`. The document body, though heavily obfuscated, contains the same URL and keywords related to stained glass suppliers, suggesting a SEO-based link farm or phishing lure. The ML classifier strongly indicates maliciousness, and the presence of a malicious redirector confirms the intent to lead the user to harmful 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.com/pify?keyword=stained+glass+sheet+suppliers+uk
    • http://xamebaj.stannard.co.nz/uploads/1/3/0/7/130776525/5f38b3187.pdf
    • http://files.koyakollection.com/uploads/1/3/1/3/131384797/8535083.pdf
    • http://files.balanceacu.com/uploads/1/3/2/3/132303329/2a7415036dac7.pdf
    • http://judav.kylerdannels.com/uploads/1/3/2/3/132302963/bimibo-binarakopavo-wajam-lotom.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/0785/9096/files/biosintesis_de_auxinas.pdf
    • https://cdn.shopify.com/s/files/1/0433/3027/3435/files/sewipivekawagofo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62856854762.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/aircraft_structures_and_systems.pdf
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/lobumipana.pdf
    • https://cdn.shopify.com/s/files/1/0429/9112/4643/files/pakumikomagepowugamu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zamujogeve.pdf
    • https://cdn.shopify.com/s/files/1/0433/1841/1417/files/1230479198.pdf
    • https://cdn.shopify.com/s/files/1/0446/0537/4628/files/leaves_of_grass_walt_whitman_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/1642/1529/files/xamojuwizenuzukamag.pdf
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/xabupan.pdf
    • https://cdn.shopify.com/s/files/1/0430/8228/5216/files/83940716879.pdf
    • https://cdn.shopify.com/s/files/1/0431/2521/1296/files/2678798073.pdf
    • https://cdn.shopify.com/s/files/1/0437/8155/4325/files/ahmadou_kourouma_les_soleils_des_independances.pdf
    • https://cdn.shopify.com/s/files/1/0439/0099/3691/files/17458507892.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_off00005f53.bin
dc3f56c1e674e2238268efdf1ed02901dcfbbbe4a3ca91a7720acbd42c5a0078		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F53 5160 bytes
font_01_sfnt_off000070c1.bin
0824a1a6dac02b41770ca3c12eafd16dcfe5190bee1a4ba8a46f9f591758de64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70C1 13644 bytes
font_02_sfnt_off00009bd1.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BD1 4324 bytes

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