Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9ee7d388df1019f…

MALICIOUS

PDF

82.4 KB Created: 2021-05-23 23:43:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6857b79f41772fad9c164aef944e0c0f SHA-1: 79468370065b4899620ec618d6cf8d5d1178cd65 SHA-256: f9ee7d388df1019f946135b57b3e096c38f9f366290f0c756ee792736380328d
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used for SEO spam or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically related to phishing. The presence of embedded URLs and the heuristic 'PDF_SEO_LINK_FARM' suggest the document's primary purpose is to drive traffic to external, potentially harmful, web pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 5

  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://mezovuduw.ru/strik?utm_term=what+are+the+four+literary+devices
    • https://xidazujagavoza.weebly.com/uploads/1/3/1/4/131453269/bb2a25c.pdf
    • https://static.s123-cdn-static.com/uploads/4465267/normal_5ffdbc5ccbcff.pdf
    • https://puziwurawube.weebly.com/uploads/1/3/1/8/131871408/fazuxuzag.pdf
    • https://walipovagotil.weebly.com/uploads/1/3/6/0/136016519/werozepumor-mivexesimivelu-bexano.pdf
    • https://butevexonukuzi.weebly.com/uploads/1/3/2/6/132681970/juripopub-zuxuzetiwabuma-manadidozo-davadugomut.pdf
    • https://cdn-cms.f-static.net/uploads/4480408/normal_6022bf7c26244.pdf
    • https://patekakedosejot.weebly.com/uploads/1/3/4/4/134479085/gominixaka_nizupobetir_jasefiseru_tubedeguka.pdf
    • https://mipopifedaruw.weebly.com/uploads/1/3/4/3/134356442/d881431d9adf11.pdf
    • https://rudazijix.weebly.com/uploads/1/3/1/4/131453676/2567769.pdf
    • https://kavikazu.weebly.com/uploads/1/3/5/3/135392310/dujufemurijarufeteka.pdf
    • https://vujivizu.weebly.com/uploads/1/3/5/3/135305207/164d35b29e.pdf
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/wadokid-wirur.pdf
    • https://cdn-cms.f-static.net/uploads/4464313/normal_60464c6e443bb.pdf
    • https://tuzisufuga.weebly.com/uploads/1/3/4/4/134458332/dakilebuzatapudiz.pdf
    • https://cdn-cms.f-static.net/uploads/4369777/normal_6067dece4420d.pdf
    • https://lipixebuz.weebly.com/uploads/1/3/0/7/130740586/kipuwipegonem_kiburidu_migavif_rakisutifepi.pdf
    • https://pegugaxuxidugif.weebly.com/uploads/1/3/1/1/131164321/6917613.pdf
    • https://cdn-cms.f-static.net/uploads/4381340/normal_60326e75b534b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/7fd07032-6a21-458f-9079-a47018d5871f/31450022370.pdf
    • https://uploads.strikinglycdn.com/files/70b3b78f-bfd1-4897-a834-8a892cfc663c/voletepimotudag.pdf
    • https://s3.amazonaws.com/sabegokek/christian_apologetics_ravi_zacharias.pdf
    • https://s3.amazonaws.com/vekodupiwarobi/18270330738.pdf
    • https://uploads.strikinglycdn.com/files/0f362093-0497-4dfe-9816-ee046cf2b3d3/poulan_p3314_chainsaw_idle_adjustment.pdf
    • https://uploads.strikinglycdn.com/files/7e0a3902-5b1f-458b-81c4-841d5164fbe6/individual_soccer_drills_to_do_at_home.pdf
    • https://s3.amazonaws.com/baxunaf/complete_linux_command_line_cheat_sheet.pdf
    • https://s3.amazonaws.com/gozifep/80839986321.pdf
    • https://s3.amazonaws.com/kovozenamofox/google_sheets_if_statement_in_query.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_off00010735.bin
418ce0927a55d1f6a046721a9b0e9f18ff81536bc6fbb5e4caf95a0ce7978394		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10735 5284 bytes
font_01_sfnt_off0001193f.bin
3521d5f253dd38a2b9d7ed38a0aa9b30b53d6d19260a2b3f55ed91b97f8361f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1193F 10388 bytes

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