Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfa2ebb8a895bad4…

MALICIOUS

PDF

86.2 KB Created: 2020-12-27 19:18:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b8353688c4115f7d887bf5657786a70b SHA-1: 9330885117e122c1465598a7560742dc3a43e339 SHA-256: dfa2ebb8a895bad4c7876e2a170303e9f22eb3e6a61dbf5521c4f296eea33a62
184 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, indicating a high likelihood of malicious intent. The document contains numerous external links, including a large link farm, suggesting it is designed to redirect users to potentially harmful websites. The presence of invoice and payment-related language further supports a phishing or scamming attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://trafftec.ru/123?utm_term=site+merch+walmart+receipt PDF link annotation
    • https://cdn.sqhk.co/navolakolire/SegdhCj/my_little_princess_1995_full_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/sevimifogu/jhdghgf/nikivokigibotulaxaxerit.pdfIn PDF document text
    • https://cdn.sqhk.co/kakumipoman/amjeRid/7_minute_vocal_warm_up_pro_2._4.pdfIn PDF document text
    • https://cdn.sqhk.co/lasesekov/Bv5jbgj/nipanek.pdfIn PDF document text
    • https://cdn.sqhk.co/sawusuzi/IMwAhjK/world_war_2_books_for_young_adults.pdfIn PDF document text
    • https://zabaparadasikid.weebly.com/uploads/1/3/4/3/134317604/29b3fc13b160b2.pdfIn PDF document text
    • https://pinonomobeberex.weebly.com/uploads/1/3/4/3/134318871/b9c8d.pdfIn PDF document text
    • https://cdn.sqhk.co/xafileme/jdZihgg/make_it_up_to_you_in_spanish.pdfIn PDF document text
    • https://cdn.sqhk.co/mepetiruzi/hdOCrhb/non_emergency_online_chat.pdfIn PDF document text
    • https://cdn.sqhk.co/munemuzabuk/gijiTgi/28606972500.pdfIn PDF document text
    • https://cdn.sqhk.co/moviferu/jeDtygi/lufirebamevigubokupa.pdfIn PDF document text
    • https://cdn.sqhk.co/dakuwuwuzije/chdTEjc/nbc_tv_watch_full_episodes_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zagusebipin/xghhdii/42549715444.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/samson_worksheets_for_kids.pdfIn PDF document text
    • https://s3.amazonaws.com/mewezekilafef/zororoso.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/sudusuvomosijisujilagotu.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/live_wallpapers_for_android_pie.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/90090563214.pdfIn 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_off0001158d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1158D 5192 bytes
SHA-256: 74289b484cd507048c8c9667b07c65f358f23956d25589d4e49a2b98ec474194
font_01_sfnt_off00012718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12718 10900 bytes
SHA-256: 56de52dbe1a9f46998ae5213e40ee11cb74d0f5e2eef6c92bcce8be5297c5871

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