Malicious PDF — malware analysis report

Static analysis result for SHA-256 bed7bb41d6709c7d…

MALICIOUS

PDF

70.1 KB Created: 2021-02-23 14:50:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f4ff1330a327bd46c35029f191d38779 SHA-1: 8faaca57ab6698c75df0d6a79d16c72ded8616af SHA-256: bed7bb41d6709c7d8752ebbad910ff19cd84d7ccbb45f3d355626c39a7ef3bbb
176 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a phishing or scam attempt, indicated by the 'SE_CALLBACK_LURE' heuristic suggesting a pretext for users to call a phone number. The presence of a large number of external links, including one pointing to a potential second-stage payload at 'https://s3.amazonaws.com/jezaxojipevu/wafivene.pdf', further supports a malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous embedded URLs suggest it is designed to redirect users to malicious content or initiate further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://leonvi.ru/wb?keyword=how%20do%20you%20turn%20on%20a%20rain%20bird%20sprinkler%20system PDF link annotation
    • https://turonobofudub.weebly.com/uploads/1/3/4/4/134463989/domivetaxitokepetib.pdfIn PDF document text
    • https://lunisaga.weebly.com/uploads/1/3/5/3/135302545/pesudato-medas-tefapis-papipajadogu.pdfIn PDF document text
    • https://cdn.sqhk.co/naketego/1bBunha/pijegusatuliwivama.pdfIn PDF document text
    • https://cdn.sqhk.co/zixemoliz/ghjcid5/pop_music_2020_playlist_download.pdfIn PDF document text
    • https://kimimidinom.weebly.com/uploads/1/3/1/4/131453749/vuwutusasuzig.pdfIn PDF document text
    • https://tesegedoveveda.weebly.com/uploads/1/3/4/8/134891870/eb3f89076d5026.pdfIn PDF document text
    • https://cdn.sqhk.co/fakosopalo/jdBhgkW/pinout_for_a_crossover_cable_connection.pdfIn PDF document text
    • https://sogatetemurus.weebly.com/uploads/1/3/4/3/134379625/logiwonikufas.pdfIn PDF document text
    • https://cdn.sqhk.co/bajafigotuvi/zigDwQ6/21115120259.pdfIn PDF document text
    • https://cdn.sqhk.co/mojafefegamo/cqNWv8g/spellbinders_die_of_the_month_july_2020.pdfIn PDF document text
    • https://pibezenasa.weebly.com/uploads/1/3/1/4/131454503/zotopunukajuvar.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/jezaxojipevu/wafivene.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/bloc_quebecois_party_platform.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/shruti_box_app_for_android_free.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/27507160159.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/how_much_does_it_cost_to_get_a_cisco_certification.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/definite_articles_in_french_worksheet.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_off0000d41e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD41E 5464 bytes
SHA-256: 08f25854c4c7f24177c7c14c974776560fc6ddcb98b1710f75d452924f48707c
font_01_sfnt_off0000e6ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6AC 10732 bytes
SHA-256: 18fafb4a0959bc8dd2d5b74254889374003b28ade84892ae5734d14df583fc15

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