Malicious PDF — malware analysis report

Static analysis result for SHA-256 64b8e6240140c21e…

MALICIOUS

PDF

84.9 KB Created: 2020-09-08 16:27:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7aa518a9ac601975dea47c88386772bb SHA-1: 406f874fa768f8ff630beebaaedb3c6ea91a6339 SHA-256: 64b8e6240140c21ef816d4c7fc5927a2480b18a26055af768f035031e3fa491a
194 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is a malicious redirector and an advance-fee scam lure. It embeds a URL that leads to a link farm, suggesting an attempt to drive traffic to potentially malicious content. Although no scripts were extracted, the document's structure and embedded URL strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/wix?keyword=transformers+last+knight+autobots
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/de9003_e377f7d7a0284483a5e7f47772c5c412.pdf
    • https://static.usrfiles.com/ugd/3f8d85_2409bedd8ad64f519030b49097288ef6.pdf
    • https://static.usrfiles.com/ugd/9ef1ea_17a74a27026b4c64a77d1d82d6063ca9.pdf
    • https://static.usrfiles.com/ugd/de60da_45431c2a81ad4aa492d92ba76cbefb47.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/33517818643.pdf
    • https://cdn.shopify.com/s/files/1/0428/4363/5879/files/zogizozuxedujudufele.pdf
    • https://cdn.shopify.com/s/files/1/0434/9768/5157/files/dewalt_circular_saw_guide_rail.pdf
    • https://static.usrfiles.com/ugd/d43733_6fccfc1a400046d98b1f8c869cb09b78.pdf
    • https://static.usrfiles.com/ugd/185c00_c7a5b390a23349ef8bf0a6f3c76a3f99.pdf
    • https://static.usrfiles.com/ugd/b8c837_8d014fd798c8423b829ce8d80b9d38f3.pdf
    • https://static.usrfiles.com/ugd/b8c837_41c7eab4ce414a78804d6f99c1bdfc73.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_off0001018e.bin
691605c87359b0cf0150ce855898f44b58a9a21dfef9214ad9c2886025b759af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1018E 5336 bytes
font_01_sfnt_off00011381.bin
5254355459bc4e74a465b4fb88f50841f4db3daef55e2fe653cf7dff57631f80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11381 2764 bytes
font_02_sfnt_off00011f18.bin
d81c012521b22eaf5fa995d3cc3ea0a6cea793d2e3a4a4c111b9cd2e7d56b69d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F18 11748 bytes

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