Malicious PDF — malware analysis report

Static analysis result for SHA-256 343a95e5eec06e75…

MALICIOUS

PDF

46.4 KB Created: 2020-08-31 09:03:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85833f1c42f1e874788d358163b96f66 SHA-1: 178776c1387d43deb120e0575f05b70e4e141e55 SHA-256: 343a95e5eec06e755c7a2b74d681cd03d75005cf3ce2d742ab80d83fa987c40f
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the presence of the URL 'https://ttraff.ru/wix?keyword=line+6+pod+x3+live+download' strongly suggest malicious intent. The 'PDF_SEO_LINK_FARM' heuristic indicates a large number of external links, many pointing to benign content, but the primary malicious link is the focus. No scripts were extracted, but the document structure and embedded links are sufficient to infer a phishing or malicious redirection attack pattern.

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.ru/wix?keyword=line+6+pod+x3+live+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/76156b_c2457e4103654294873abf9e1265eaf7.pdf
    • https://static.usrfiles.com/ugd/6cfc61_9a1260317e464742a3a4edebb0f7c64c.pdf
    • https://static.usrfiles.com/ugd/b8c837_f5c39ae288aa48338b4977a89dcd2e02.pdf
    • https://static.usrfiles.com/ugd/b8c837_16d40a386dc844cdb4fc434921724c2d.pdf
    • https://static.usrfiles.com/ugd/575363_69a50cc79a314121ac3fdccccefe2fd0.pdf
    • https://static.usrfiles.com/ugd/b8c837_a3bcece0ea7d4d40863468a3da084ff0.pdf
    • https://static.usrfiles.com/ugd/de65f7_aa2ab2585d7448768e7baac98c381b85.pdf
    • https://static.usrfiles.com/ugd/26938b_09f52fd1301b45a38fdaaf624161de86.pdf
    • https://static.usrfiles.com/ugd/4b874d_1343ea163ad04e3fb938cc5bf1cfd113.pdf
    • https://static.usrfiles.com/ugd/fd3290_fec87e69f9b142658767ae63dd0f7e89.pdf
    • https://static.usrfiles.com/ugd/a01749_2526f05cc7a04b0f8f511e2a6d00c126.pdf
    • https://cdn.shopify.com/s/files/1/0440/9524/2392/files/47059745922.pdf
    • https://cdn.shopify.com/s/files/1/0429/6838/3642/files/jebigu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1673/9222/files/android_auto_apk_version.pdf
    • https://cdn.shopify.com/s/files/1/0437/9528/4130/files/xudolejub.pdf
    • https://cdn.shopify.com/s/files/1/0450/7149/9416/files/golijikabijopejepe.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_off0000773d.bin
f55d2bbd15b81dd02b96a06101115136a060f23b412c3f95b6e808ea64ce703f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x773D 5156 bytes
font_01_sfnt_off000088ea.bin
67b034c489d8cebf86163f15235e9b4c5c206cd0a67dbb1999ac3e8c752115b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88EA 10376 bytes

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