Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa131ecc097964ea…

MALICIOUS

PDF

81.2 KB Created: 2021-03-06 15:51:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2bb721e2e5509a67ee3f8eb46b036b10 SHA-1: be771f0475c40a9e810909fda0213afca5c59c56 SHA-256: fa131ecc097964ea9eabcd135a139c9ecc3708c2b9be3233ed0e5ac976268961
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely intended to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan. Although no scripts were directly extracted, the PDF structure and embedded URI suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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://jacksth.ru/wix?keyword=surah+ya+sin
    • https://cdn-cms.f-static.net/uploads/4368493/normal_5fea116c3dc2c.pdf
    • http://winoorama.space/11919418477jmvvc.pdf
    • http://gravkamen.ru/why_my_hotspot_is_not_working_androidrayku.pdf
    • https://cdn.sqhk.co/vopufepivipe/ghHjgeR/63989632711.pdf
    • http://gachihyper.xyz/rv_dinghy_towing_guide_2014jkdz2.pdf
    • https://static.s123-cdn-static.com/uploads/4377109/normal_5feed579a4386.pdf
    • https://cdn.sqhk.co/lixipadiwel/hsVjhij/96660387417.pdf
    • http://berabujadew.22web.org/sisap.pdf
    • https://cdn-cms.f-static.net/uploads/4500910/normal_60242be3876db.pdf
    • https://cdn.sqhk.co/ledirevobep/gdNfpZC/assassin_corp_mod_apk_vip_unlocked.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xilekur.epizy.com/venn_diagram_practice_questions_for_cat.pdf
    • http://wuxojawe.epizy.com/34273381395.pdf
    • http://tupomomi.rf.gd/mifirebarad.pdf
    • http://sewepara.epizy.com/rumugopesez.pdf
    • http://maveropewavofu.rf.gd/sofezozobezadewifipined.pdf
    • http://gujodilulu.rf.gd/family_child_care_forms_california.pdf
    • http://nunusama.rf.gd/argentina_passport_application_form.pdf
    • http://gisinazujawapub.epizy.com/86040240619.pdf
    • http://pugatexekar.rf.gd/cakewalk_pro_audio_9_manual.pdf
    • http://muweluboxakok.rf.gd/painful_spot_on_leg_no_bruise.pdf
    • http://lojexezotobezu.rf.gd/91952917664.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea4c.bin
48f1c4e74c0c7205e2df1115603877f11c4dcbe6e06432fbc40d5138757c44a7
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA4C 4944 bytes
font_01_sfnt_off0000fb18.bin
7201485ce2c82eddf442f948115298fc55729a640f132aa55de2c31c9bd75f64
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB18 11364 bytes
font_02_sfnt_off0001215a.bin
47074609285f177f2eba95cac2a23d3c2b0158628d70095d46f612daaa8d143d
pdf-font-stream PDF embedded font (sfnt) at offset 0x1215A 16440 bytes