Malicious PDF — malware analysis report

Static analysis result for SHA-256 24b5846dfc2c844e…

MALICIOUS

PDF

95.0 KB Created: 2021-04-25 19:18:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 60fa646cbe1b91e18a0650c80fb68890 SHA-1: 7d94a96718531ea4cdbf178f82504aa2369f5c06 SHA-256: 24b5846dfc2c844e00ffe8f9fe830c39dca0ffda6ebfda6368ece6ba355df87b
146 Risk Score

Malware Insights

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

The PDF contains numerous external URLs, many of which are hosted on disposable domains and appear to be part of a link farm, suggesting a phishing or scam attempt. The 'SE_CALLBACK_LURE' heuristic specifically indicates the document is designed to trick users into calling a phone number under the guise of resolving a billing, refund, or security issue. While no scripts were explicitly extracted, the presence of external links and the callback lure strongly suggest a phishing attack vector.

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://midufefew.ru/strik?utm_term=macbeth+act+3+scene+4+quotes+quizlet PDF link annotation
    • http://20970907.net/gre_equation_sheetuvvdk.pdfIn PDF document text
    • https://cdn.sqhk.co/fowujizul/Ciehgid/converting_fractions_to_simplest_form_worksheet.pdfIn PDF document text
    • https://luxowodadobib.weebly.com/uploads/1/3/5/3/135325591/kofoxurafovet_sevanegosibaroz.pdfIn PDF document text
    • http://helpverifybadges.com/gomavovugowiluvarilaw7vsl.pdfIn PDF document text
    • https://cdn.sqhk.co/vajegipofuz/w4Eijij/zatab.pdfIn PDF document text
    • http://edalovert.xyz/12925152478sqyan.pdfIn PDF document text
    • http://itprod.space/rocket_man_elton_john_lyrics_geniusy3b4g.pdfIn PDF document text
    • https://durewipi.weebly.com/uploads/1/3/5/3/135301904/5714180.pdfIn PDF document text
    • https://cdn.sqhk.co/nizivatitogu/aAJias5/brick_builder_star_wars_star_destroyer.pdfIn PDF document text
    • https://tenogamux.weebly.com/uploads/1/3/2/6/132681545/9771c0.pdfIn PDF document text
    • http://fuwajigub.iblogger.org/advanced_calculus_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/juvebuzizej/0NieiDM/1731753855.pdfIn PDF document text
    • http://googsnat.space/rufujuri7ympf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wetizizokixo.epizy.com/71221439369.pdfIn PDF document text
    • http://kijolitenelofon.epizy.com/kezolowavufujejew.pdfIn PDF document text
    • http://zumewozuzetarun.epizy.com/92360588845.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/49901075752.pdfIn PDF document text
    • http://wuzugimekiwetad.epizy.com/8506476190.pdfIn PDF document text
    • http://beviraveda.epizy.com/how_to_become_an_effective_public_speaker.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/tips_for_graco_magnum_x5.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/accord_guitare_basse_5_cordes.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDAC 29040 bytes
SHA-256: 328df1d26445125a3255cd129ca3aa463f6dac9a37012db9d5ead8876e9f4c2e
font_01_sfnt_off00013815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13815 5364 bytes
SHA-256: 7b2325bc188fdfddae779d4bd98da995dd6aec9156e98c18185210a1c39498ca
font_02_sfnt_off00014a6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A6F 10436 bytes
SHA-256: 3a5c4ee91e45c20ad64a845c72a8ade5367e917a85de535e2160576f3091c090

Open this report in the interactive analyzer, or submit your own file for analysis.