Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b69a00f7cd8d871…

MALICIOUS

PDF

75.6 KB Created: 2021-06-20 04:52:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 469770bf056731a9b7ec4fc54272a3e6 SHA-1: 2a118efd1c10021371d802e7ccfbef25f3c9c6b0 SHA-256: 4b69a00f7cd8d8717a799a615816c6c25ca00470ef47d62092357e5064b100be
156 Risk Score

Malware Insights

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

The PDF document contains numerous links, many hosted on compromised CMS platforms, directing users to download files. The presence of a "paysafecard generator apk" lure suggests a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent, likely to facilitate the download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crysiq.ru/uplcv?utm_term=paysafecard+generator+apk PDF link annotation
    • http://vaughanreunion.com/clients/7/7c/7cfe0b8ff6d5e3136a6575a9b258a09c/File/jivavoxixinagimototexel.pdfIn PDF document text
    • https://genericdiabeticteststrips.com/userfiles/files/32990456544.pdfIn PDF document text
    • https://panegovernance.com/ourprojects/chowki/UserFiles/file/tabinivulubenawa.pdfIn PDF document text
    • https://kede.org/userfiles/file/bixoloxegokisa.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/0cd6d9f0c3774cd0f09a3270697bc2bc/davoritakutiji.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/31773847443.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8889b020ac---jawisilujenodivib.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160832670b41a6---xizasijizuvalo.pdfIn PDF document text
    • http://hanleyresources.com/images/84110625927.pdfIn PDF document text
    • http://amblesidewindermere.ca/fckuploads/images/file/vozoboguzakegukojemu.pdfIn PDF document text
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/160c0f2b283764---xagowafudetoke.pdfIn PDF document text
    • http://szentdorottyapatika.hu/files/84384593008.pdfIn PDF document text
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160acf1f656837---rimivebukolizij.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/4782554173.pdfIn PDF document text
    • https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/12fa1njuvaocq9fndpnn8h678n/80646549612.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/a930e0dd5e9a185acaed6c37e7fdcf18/97000182443.pdfIn PDF document text
    • https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/8fa706dc986b07a9f2ef448c15121d6f/nixezusejijum.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_off0000e8e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E8 5460 bytes
SHA-256: ed61911c508179c6df6949e21f95e55b6c7e00ba9bb32eadb5082785015ae0ca
font_01_sfnt_off0000fb9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9C 11064 bytes
SHA-256: d0855c7d543b47a308f59f4f220e2f55d171b31720423058d6a16cf2ba2c6532