Malicious PDF — malware analysis report

Static analysis result for SHA-256 adc2ebe5459fca44…

MALICIOUS

PDF

43.8 KB Created: 2020-08-23 14:24:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa7869ef5db2c4400ac6e1bab720d099 SHA-1: c131536d0b9e4ff34e5bfcea8d874e1148b09ca0 SHA-256: adc2ebe5459fca4471294a06885ec2f3514b1306df1e96fd99f3a1b11bb78811
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to host further malicious content or phishing pages. The document body, though heavily obfuscated, contains the string 'Happy wheels free pc' and the URL, suggesting a lure to trick users into clicking the malicious link. The presence of numerous other links, many pointing to Shopify, indicates a link farm designed to improve SEO for 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.com/pify?keyword=happy+wheels++free+pc
    • http://files.kentuckyarttherapyassociation.org/uploads/1/3/1/4/131406412/8963022.pdf
    • http://files.soniceliteolympia.com/uploads/1/3/2/3/132303339/disanexudi.pdf
    • http://files.healthinharmonywellness.com/uploads/1/3/1/3/131379874/8094099.pdf
    • http://rixaxok.hvaillancourt.com/uploads/1/3/2/6/132680813/dinukobu-lopeba.pdf
    • http://files.miriamruberlartist.com/uploads/1/3/1/4/131483019/828517e6fc26dc2.pdf
    • https://cdn.shopify.com/s/files/1/0438/3699/7782/files/firufozobilojewen.pdf
    • https://cdn.shopify.com/s/files/1/0437/8797/6864/files/game_god_of_war_2_apk.pdf
    • https://cdn.shopify.com/s/files/1/0433/9813/5966/files/46609466659.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/ankhiyon_ko_rehne_de_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0437/1300/3674/files/sitosuginodatabupal.pdf
    • https://cdn.shopify.com/s/files/1/0432/0926/1217/files/pioneering_portfolio_management.pdf
    • https://cdn.shopify.com/s/files/1/0438/2952/6688/files/88523511078.pdf
    • https://cdn.shopify.com/s/files/1/0429/8178/5753/files/fuvar.pdf
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/4976603100.pdf
    • https://cdn.shopify.com/s/files/1/0434/0560/7070/files/84697678217.pdf
    • https://cdn.shopify.com/s/files/1/0434/0196/9820/files/fda_medical_device_adverse_event_reporting_requirements.pdf
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/56911514326.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/
    • https://cdn.shopify.com/s/files/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cf7.bin
b348ee251b3689109129a8d623c3266a33fafc552ec39d79beffd7634b52a9d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF7 5260 bytes
font_01_sfnt_off00007ee6.bin
64c3e53f600d68d7b49aaa0c14bfcceb856e714f7b9ac7baa0eeb824d3168adf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE6 10356 bytes

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