Malicious PDF — malware analysis report

Static analysis result for SHA-256 04d93904193b0062…

MALICIOUS

PDF

41.0 KB Created: 2020-08-29 06:08:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f964d806fe7ab6574e0ab46b8a07714 SHA-1: fa35730c927db215c141b0502b00b9b561be9c27 SHA-256: 04d93904193b0062ea6a9d8aed67dc1d9cd70135621cdc9202ed47662d70c29c
162 Risk Score

Malware Insights

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

The PDF contains a link to a redirector that is known to host malicious content, likely to facilitate a download scam. The document body and embedded links suggest a lure for game-related downloads, attempting to trick users into clicking the malicious URL. No scripts were extracted, but the PDF structure and embedded links are indicative of a phishing or malware distribution 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=gta+liberty+city+stories+iso+file+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/4089/7174/files/58589845289.pdf
    • https://cdn.shopify.com/s/files/1/0430/9545/7941/files/levuwojaxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67257536452.pdf
    • https://static.usrfiles.com/ugd/b8c837_ddbbd5f0e68a4e4d8a973a8d228d58dd.pdf
    • https://static.usrfiles.com/ugd/b8c837_22753cedaa424edbbe5fa513a506f6e2.pdf
    • https://static.usrfiles.com/ugd/b8c837_b97e665d54c24598bccd8e350d895c10.pdf
    • https://static.usrfiles.com/ugd/b8c837_e3adabb3da63441b94fc10baf91845ec.pdf
    • https://static.usrfiles.com/ugd/b8c837_023fcff311f84dc89e92900234c5be53.pdf
    • https://static.usrfiles.com/ugd/b8c837_dfe27579825242e195fc597e4d0366e4.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9880/files/zopagorojazotinedamoba.pdf
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/banner_photo_editor_app.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_off0000600c.bin
75d29898a0c3247af3a77470f5df210eac66884f86aa17668a40979c27b1c710
pdf-font-stream PDF embedded font (sfnt) at offset 0x600C 5380 bytes
font_01_sfnt_off0000727e.bin
b64f2d4b9b5fed7c3ef751feec6a6d9262ac9938306bff4a8b78b2d3b424cc08
pdf-font-stream PDF embedded font (sfnt) at offset 0x727E 11424 bytes