Malicious PDF — malware analysis report

Static analysis result for SHA-256 472032ec2f5cdbde…

MALICIOUS

PDF

36.6 KB Created: 2020-09-02 02:27:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f448fc20ab311d9c4d2ce36835731326 SHA-1: 5e650afc2b1bcd188c6b7fa226516d57ee2d450c SHA-256: 472032ec2f5cdbdea5d98bc484537c50ce0d6bd0842eef22c8312ae9e884bebf
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.me, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL and keywords suggesting a lure. The presence of numerous Shopify links, while mostly benign, is characteristic of SEO poisoning tactics to improve search engine ranking 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.me/wix?keyword=iadt+trauma+guidelines+pdf
    • https://cdn.shopify.com/s/files/1/0433/8361/9738/files/complete_idiot_guide_to_crochet.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/lspdfr_callouts_swat.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/diloka.pdf
    • https://cdn.shopify.com/s/files/1/0430/6052/7253/files/reality_testing_ability_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0435/9726/7112/files/arduino_uno_guide.pdf
    • https://cdn.shopify.com/s/files/1/0452/5555/7280/files/english_speaking_book_in_kannada.pdf
    • https://cdn.shopify.com/s/files/1/0457/6863/8620/files/emulator_android_pc_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0427/3097/9495/files/61863270664.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/theraband_exercises_arms.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/kyocera_duraxv_plus_review.pdf
    • https://cdn.shopify.com/s/files/1/0429/8434/1657/files/35446969202.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000522c.bin
1d316acdbc29ce15563da49e7d61b0407e087c06512b405742f7b18dd20602c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x522C 5296 bytes
font_01_sfnt_off0000641c.bin
bd40dfab6b58ed8154b059ab64d57618de89ed1e3740cc2a15ac5bbadb48d033		 pdf-font-stream PDF embedded font (sfnt) at offset 0x641C 9904 bytes

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