Malicious PDF — malware analysis report

Static analysis result for SHA-256 1749a77891978d85…

MALICIOUS

PDF

79.1 KB Created: 2021-03-25 03:51:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 8388d7fb7fd9d8acf6909033ff93113c SHA-1: c0253622f8fa607457277e0aec2ac8449bc7dbfc SHA-256: 1749a77891978d8544e8705f4338b270e158a186e6e2e854c3091b26b77cd24d
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and is identified as a link farm hosted on disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://soxebez.ru/aws?utm_term=4e+monster+manual+4 PDF link annotation
    • https://baputopozim.weebly.com/uploads/1/3/5/3/135336161/db1aba51259.pdfIn PDF document text
    • http://pixxel.life/nasb_leather_bible_personalizedangq4.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/arduino_tutorial_tutorialspoint.pdfIn PDF document text
    • http://tixaman.scienceontheweb.net/korean_alphabet_a-z_translation_in_english.pdfIn PDF document text
    • https://minaraxu.weebly.com/uploads/1/3/4/7/134765114/bafik.pdfIn PDF document text
    • http://kosamaritaj.getenjoyment.net/36083613221.pdfIn PDF document text
    • http://lokubakodo.getenjoyment.net/zokesodoliz.pdfIn PDF document text
    • https://zejosawazir.weebly.com/uploads/1/3/1/8/131856185/babirivaka_murififikowo.pdfIn PDF document text
    • http://myluckybet.xyz/tofagizelewariw3r1xk.pdfIn PDF document text
    • http://shoppingyxplus.xyz/airplay_dlna_receiver_pro_apk_freez3kyd.pdfIn PDF document text
    • https://mitukuruzatag.weebly.com/uploads/1/3/5/3/135346955/xuxelupulujaxoj_wiwimadu_gigewufus_lubasedow.pdfIn PDF document text
    • https://birirewenojitu.weebly.com/uploads/1/3/0/8/130813362/weroduriki-demijumekekexop.pdfIn PDF document text
    • http://draiwenstore.online/pikijuwatasowujidak6dudn.pdfIn PDF document text
    • http://barbanapoli.moscow/rise_up_lyrics_karaoke_acoustice5u93.pdfIn PDF document text
    • http://kyhni.site/91386946509qi0w7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://abc5f1b3-ad37-4660-b048-d9bff2240d70.filesusr.com/ugd/a1fb68_1134ddfbad374383a068a0b1ea0ae763.pdf?index=trueIn PDF document text
    • http://vorenetizufumuj.rf.gd/ti_phn_mm_chuyn_i_hnh_nh_sang.pdfIn PDF document text
    • http://tevisub.rf.gd/mamew.pdfIn PDF document text
    • https://1fa67a36-2e8b-44cc-a955-751d80433762.filesusr.com/ugd/d85e51_23df4efa277f46719f8d9041dfa9d86b.pdf?index=trueIn PDF document text
    • http://likusikukir.epizy.com/hammond_1590bb_drilling_template.pdfIn PDF document text
    • https://6fc76513-a17a-4053-940d-bef108f5ea85.filesusr.com/ugd/3a5ef0_9e6aa71d41064cf086aac6a8dab8fd2b.pdf?index=trueIn PDF document text
    • https://ea29520f-fefa-4c12-ab21-0e0839e82572.filesusr.com/ugd/5d2047_54f3fc36f92c48249f1d614520e49c05.pdf?index=trueIn PDF document text
    • http://jakosorer.epizy.com/vuzexinikarozidojopav.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_off0000fa32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA32 4824 bytes
SHA-256: eb03d1417a80beafbd72767f59ba5770a8e0b9ecd5d2d10bbb7b1c3d4187cf3d
font_01_sfnt_off00010a7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A7F 10660 bytes
SHA-256: 5027582e032c0d1bc5510570253148af23eb3e3689357fba3200905cf551802f

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