Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7fe654a7f7b2263…

MALICIOUS

PDF

84.7 KB Created: 2020-11-23 19:35:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d22c9af6a58b5affddc926640a027de8 SHA-1: 11c2d2ff644be0c27b10dcbe074938c0f9ead859 SHA-256: e7fe654a7f7b22637267db53e1c22119ad48e794f205e61fe57e2d56081714e3
222 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also listed as an IOC. The document body, though heavily obfuscated, contains text related to a live stream, likely a lure. The presence of numerous external PDF links, some pointing to benign content and others to unknown or malicious infrastructure, suggests a link farm or SEO poisoning tactic. No scripts were extracted, but the overall structure and the malicious redirector link strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gettraff.ru/123?utm_term=patriots+chiefs+game+live+stream
    • https://cdn-cms.f-static.net/uploads/4367287/normal_5f892259d2573.pdf
    • https://lelewubinuzuton.weebly.com/uploads/1/3/4/7/134771703/3684505.pdf
    • https://zukusabaxiwig.weebly.com/uploads/1/3/4/0/134000387/xixewebo.pdf
    • https://nidiladidubupa.weebly.com/uploads/1/3/4/7/134753920/275165.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/3a53a1e0-86c8-4e41-8b32-999ad296ca02/aumentativos_y_diminutivos_ejemplos.pdf
    • https://uploads.strikinglycdn.com/files/9e38c8ec-c73e-45a4-98c4-3c3449885a5b/mejivapux.pdf
    • https://uploads.strikinglycdn.com/files/9be3bd97-d647-42f5-b2f7-909650031c6b/wadox.pdf
    • https://uploads.strikinglycdn.com/files/7c08e07e-9b74-4d88-8aa0-759a28779b91/jofuzewumowuxarasigizat.pdf
    • https://uploads.strikinglycdn.com/files/250b8d20-4ceb-4379-a360-ac62d82b3959/nuzikogenuxebizaxokeri.pdf
    • https://uploads.strikinglycdn.com/files/d2a0df74-247e-448c-82d8-66898684bc7f/actividades_letra_t_actiludis.pdf
    • https://uploads.strikinglycdn.com/files/ee08d706-12fd-47b5-a842-243d22bff0c5/lubejeroseko.pdf
    • https://uploads.strikinglycdn.com/files/87ab0746-9d09-4d5c-8b65-65206cf31698/duwosinudajaponef.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec3a.bin
13d0019f9bff673b3be9132701b236447f28726e581f115e64bb22f6c45096f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC3A 5036 bytes
font_01_sfnt_off0000fd62.bin
a1af6e0932c00975958ef3320fc4656f15aa5347d5e20be410996fed3e1be6eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD62 11100 bytes
font_02_sfnt_off000122ff.bin
9ac5cb6024348429336d213b60d7c335109f542a7b1a070ed75ce0c27100d8c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122FF 16108 bytes
font_03_sfnt_off000137db.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x137DB 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.