Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aa2625cc7385882…

MALICIOUS

PDF

75.3 KB Created: 2021-06-09 00:11:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5069e96eb27c0bec34bff507c9f79af3 SHA-1: 05af6c6e330038dd40e7361a2e9a7a76d11e5fb0 SHA-256: 7aa2625cc738588201df8df9c5a269861870c744b962c84db8d2b7577c3ea382
196 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. The document body, though heavily obfuscated, contains references to 'forza horizon 4 apk android' and appears to be a link farm hosted on compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The presence of multiple external URIs and the 'SE_PAYMENT_REDIRECT_LURE' heuristic indicate a high likelihood of a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ketchas.ru/uplcv?utm_term=forza+horizon+4+apk+android PDF link annotation
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609adee349f02---gezojizumenoka.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f4be786937---48847400865.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/75c5e4831e4d734ca5f92993533573eb/24609971579.pdfIn PDF document text
    • https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/f0ab468a18fade33d1537f5ab430bd94/62722484321.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/bfb9875505644e366db7377a8610bcaa/51286323364.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/c6c22a45c9c719ec0b501377286255f2/61928788498.pdfIn PDF document text
    • http://jjmcp.jp/userfiles/Image/file/mivujoxatukasapolebalo.pdfIn PDF document text
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/3cf9d571424d55d74172c75198d63088/gomumexari.pdfIn PDF document text
    • https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/f1f08943969101b5398f252b04b1e949/nezomevawaxazafa.pdfIn PDF document text
    • http://micronforgacsolo.hu/UserFiles/file/29023824706.pdfIn PDF document text
    • https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/23b18f985549e191c25150d8b3fbb6c8/5666655022.pdfIn PDF document text
    • https://hyundaia.ru/userfiles/file/7267987302.pdfIn PDF document text
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/fg51ag5g671c6lvvp8tf3lr44d/xokuwerolaxebafoxar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC94 4996 bytes
SHA-256: 24b840075a94dc14cf6ecb884026199c197a7e7f83fe0dc33d99b78780c31ffa
font_01_sfnt_off0000fd95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD95 10268 bytes
SHA-256: 37c21a43d4f1160731de476446565c58ef3c61f13ed694ff0ebfaed94ae04fcd