Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe9019ad5f8cc394…

MALICIOUS

PDF

518.0 KB Created: 2020-08-31 01:27:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd0d004001f109bc8f1884e44fb53395 SHA-1: 2f240c71eb689b3b79e7246478e70fdf07bf9bf9 SHA-256: fe9019ad5f8cc3943523e157098a0c2b53de6229ed1b4499a789f440955652dd
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, which is strongly indicative of a phishing or malware delivery attempt. The document body, though heavily obfuscated, contains text related to 'material orders' and the malicious URL, suggesting a lure to a scam website. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9759

Heuristics 3

  • 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.
  • 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.club/wix?keyword=marita+orders+12+yards+of+material
    • https://static.usrfiles.com/ugd/6908d7_bbf30aa3a26b456da6b957eee498899a.pdf
    • https://static.usrfiles.com/ugd/87fdc7_11fb51a5b31c4b8793a55aad9e43ffd4.pdf
    • https://static.usrfiles.com/ugd/b8c837_13cff52808c341408d9d2ff4f2ff97d2.pdf
    • https://cdn.shopify.com/s/files/1/0430/7818/9205/files/11168792894.pdf
    • https://cdn.shopify.com/s/files/1/0434/8978/8069/files/kivapo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3791/6312/files/10411458573.pdf
    • https://cdn.shopify.com/s/files/1/0461/8092/5594/files/88962968481.pdf
    • https://cdn.shopify.com/s/files/1/0437/2358/7733/files/56959273302.pdf
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/64536560199.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pejodogidevetakuranuwa.pdf
    • https://static.usrfiles.com/ugd/a76634_0f4e1c3286e54b98b50a08def88883b3.pdf
    • https://static.usrfiles.com/ugd/b80405_b4224057f3fe4c4eb047216948405617.pdf
    • https://static.usrfiles.com/ugd/b8c837_b49899ea6ce24531be5abbcbe765ce65.pdf
    • https://static.usrfiles.com/ugd/1fa6dd_e8c0c3167c2244a9808019a01de5312e.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_off0007ceaa.bin
83c3dad9e0bc86f15c0b3653b825e5a8f21eed662b00204f6e2c128866771028		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEAA 5344 bytes
font_01_sfnt_off0007e0d3.bin
b21a8ff4f1a0ff6e6b421a75ef1cc78f71a7a25e349e7769a5bd499c39d85839		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E0D3 11784 bytes

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