Malicious PDF — malware analysis report

Static analysis result for SHA-256 49606461e0d9f664…

MALICIOUS

PDF

93.4 KB Created: 2021-03-18 21:31:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 0df4d6d1310ef429b012fd60472024b9 SHA-1: 195dd3f1d5f711e1bc7c8c2d02c6039b2cd220cd SHA-256: 49606461e0d9f6647c6696163f0230bb6defb575556d36e927935a7b5eaf4bbe
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs and a heuristic firing for 'Callback phishing phone lure' indicates a social engineering attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely a phishing or scam operation. While no scripts were directly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to trick users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://botokaw.ru/award?keyword=asurion+att+affidavit+pdf PDF link annotation
    • http://trastqort.online/sejikogibouphxs.pdfIn PDF document text
    • https://cdn.sqhk.co/tajugajobib/gEXibgf/fast_crafting_guide_rs3.pdfIn PDF document text
    • http://fidesuwuranotif.getenjoyment.net/carta_de_apresentao_da_empresa.pdfIn PDF document text
    • http://xokebidukefu.getenjoyment.net/flatland_by_edwin_abbott.pdfIn PDF document text
    • http://kexazejarufag.iblogger.org/rizewemiwosuladivil.pdfIn PDF document text
    • http://digitalcalakk1.xyz/what_are_the_feminist_theoriesznpgn.pdfIn PDF document text
    • https://cdn.sqhk.co/nurafurofopu/cOgihhY/oconomowoc_memorial_hospital_er.pdfIn PDF document text
    • http://wijofotezopadik.medianewsonline.com/the_stand_tv_series_1994_cast.pdfIn PDF document text
    • http://bapatavusirave.mygamesonline.org/16625733698.pdfIn PDF document text
    • http://lalexejiwisejul.iblogger.org/bisini.pdfIn PDF document text
    • http://itdiscount.pro/9597688682062uxo.pdfIn PDF document text
    • http://dompodklyuch.com/8141597841920s1z.pdfIn PDF document text
    • https://cdn.sqhk.co/dufikibagi/7hYPLig/25065682094.pdfIn PDF document text
    • https://cdn.sqhk.co/xetajikok/eggJijp/cricket_wireless_hotspot_devices.pdfIn PDF document text
    • https://cdn.sqhk.co/nukusigemug/jcNxijM/download_fluffy_bubble_live_wallpaper.pdfIn PDF document text
    • http://foxilajat.sportsontheweb.net/14976158464.pdfIn PDF document text
    • http://rolapisi.scienceontheweb.net/learning_spanish_words.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://poxabeb.rf.gd/figo_guidelines_2018.pdfIn PDF document text
    • http://pafaxifusawa.rf.gd/79286373749.pdfIn PDF document text
    • http://nafusenij.rf.gd/76224357096.pdfIn PDF document text
    • http://medexode.atwebpages.com/tipeturomazilos.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001183f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1183F 5052 bytes
SHA-256: 9f98d58337c6ab821b6393d02556dc4dba78832121ef0a81eab57d5b275de566
font_01_sfnt_off00012989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12989 11580 bytes
SHA-256: 8fca73dc8b079d96d31623b5de1d5c120370fe0fa9b3062cb8d50b6c89241841
font_02_sfnt_off00015184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15184 16140 bytes
SHA-256: 159427b32ed66bfbde86def5e6c2992bde67dfb25400c4000a37c9b59b949b61

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