Malicious PDF — malware analysis report

Static analysis result for SHA-256 00f2fe142c3cebf7…

MALICIOUS

PDF

51.3 KB Created: 2020-08-12 17:07:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f503fdcfa3a74f8f1bb02375c220a5c9 SHA-1: c95856ede891dc2c4d891cf613357c434f0a94d4 SHA-256: 00f2fe142c3cebf7366dafb69cd9046f19d604e6cbc35c2c050324477cc20ad9
154 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though partially corrupted, includes the target URL and a reference to a guide, suggesting a lure. The presence of numerous other PDF links, many pointing to Shopify, indicates a potential link farm or SEO poisoning attempt to distribute 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.ru/wb?keyword=hooked%20a%20guide%20to%20building%20habit%20forming%20products%20pdf
    • http://gulede.janinehartley.com.au/uploads/1/3/1/4/131411896/winuzimafoxa.pdf
    • http://files.braking4butterflies.com/uploads/1/3/1/4/131453177/833a7df4aa.pdf
    • http://files.whatsmybox.com/uploads/1/3/2/7/132712451/4625446.pdf
    • http://nadopufo.oraclefitness.com/uploads/1/3/1/6/131637814/zonadufuxe_dovubaruw_zotawavodu_wilapek.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/3818/6394/files/basic_auto_repair.pdf
    • https://cdn.shopify.com/s/files/1/0440/3062/3894/files/tubilupawejopiro.pdf
    • https://cdn.shopify.com/s/files/1/0430/8339/9329/files/wixorodupapelodipetiko.pdf
    • https://cdn.shopify.com/s/files/1/0432/6401/6539/files/89567242951.pdf
    • https://cdn.shopify.com/s/files/1/0431/7678/8134/files/29146974281.pdf
    • https://cdn.shopify.com/s/files/1/0432/8328/4132/files/genakodujabomu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/ronuninofesufejuxegabido.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/vikopoguretejiw.pdf
    • https://cdn.shopify.com/s/files/1/0429/9928/3863/files/vejitaropoxeko.pdf
    • https://cdn.shopify.com/s/files/1/0428/1673/3340/files/kakede.pdf
    • https://cdn.shopify.com/s/files/1/0431/5499/7402/files/23092566702.pdf
    • https://cdn.shopify.com/s/files/1/0431/0581/2629/files/60810035516.pdf
    • https://cdn.shopify.com/s/files/1/0431/4382/3511/files/bezufidomutovilemeseveguw.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_off00008a28.bin
e2b01a99d7f67b89aac678da124729fde328559059286e13e220aea680837d8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A28 5732 bytes
font_01_sfnt_off00009d76.bin
9d7f66892f168794a403de8b7f33850925d4bba79b419d434e10325865f52466		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D76 10060 bytes

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