Malicious PDF — malware analysis report

Static analysis result for SHA-256 5abff129c7ecae28…

MALICIOUS

PDF

91.4 KB Created: 2021-02-27 20:43:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e30fd863dfed5da1162df4b3d5baf2ef SHA-1: 95b93a2e16a30e0ba01b20c98d2067bd0a961a46 SHA-256: 5abff129c7ecae28d5c652cb0eed3bc1bf0e7f24da421eefaa66d38db99d1304
116 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://dugedepap.ru/strik?utm_term=pentair+whisperflo+1.5+hp+pool+pump+motor PDF link annotation
    • https://cdn.sqhk.co/fuludasowipu/dlMRvg8/82975803313.pdfIn PDF document text
    • http://magazinrf.xyz/rtgs_form_of_allahabad_bank_in_formatgzg3t.pdfIn PDF document text
    • https://cdn.sqhk.co/detazido/jaif8ge/bloons_td_6_wiki_maps.pdfIn PDF document text
    • https://cdn.sqhk.co/niwexifa/ghDihgi/bomberman_tournament_gba_rom_espanol.pdfIn PDF document text
    • http://lnstagram-helping-centre.com/bineladjmwbt.pdfIn PDF document text
    • https://cdn.sqhk.co/gitopedevid/D6UaHib/sajukalamegujak.pdfIn PDF document text
    • https://cdn.sqhk.co/rurizibaxami/eIheAib/davodomamobojorifixosu.pdfIn PDF document text
    • http://checkmycredit.info/mumipofexakwj3r.pdfIn PDF document text
    • http://rusakova.space/pathfinder_sleeping_in_armorx0ll1.pdfIn PDF document text
    • https://cdn.sqhk.co/ravuviwidi/SjeVc5B/bukotikujopinasar.pdfIn PDF document text
    • http://mazers.fun/blacksmithing_leveling_guide_wow_classicosh5p.pdfIn PDF document text
    • https://cdn.sqhk.co/nivurerazusa/jjhatBe/marshalls_return_policy_different_store.pdfIn PDF document text
    • http://nasty666.space/810728189289d71c.pdfIn PDF document text
    • https://cdn.sqhk.co/vujejanar/WihH5hg/29581163828.pdfIn PDF document text
    • https://cdn.sqhk.co/fapewejav/ghkhajb/texigemagebe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00012ec3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12EC3 26920 bytes
SHA-256: ff9c63dc106d5b1f2b9bc9d5eaf35b92452afeecf90c91985fc3fd43d553b2a0
font_00_sfnt_off0000f32e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF32E 5444 bytes
SHA-256: 02f891490edc28e91c92076414dce1af1012ffbf657b7e96f0cbd34f898aea43
font_01_sfnt_off000105a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A7 12084 bytes
SHA-256: 5634d88099ba9f1e69be5000f176c1158bb12ebf3cdb6ab462f138163cb25de2

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