Malicious PDF — malware analysis report

Static analysis result for SHA-256 b06e12265d7b5bfd…

MALICIOUS

PDF

103.7 KB Created: 2021-05-03 03:54:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 3aa57f4f217bdf0e8ec5f10c99d5e9d0 SHA-1: 75916addac1c31c3e72456b84ad454812f90255f SHA-256: b06e12265d7b5bfd440ad88c02df918423826c79757b24143407435bb086e347
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, specifically as a phishing or trojan delivery mechanism. It contains numerous embedded URLs pointing to disposable domains and link farms, indicating a likely attempt to redirect users to malicious sites for phishing or malware downloads. The presence of external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic strongly suggest this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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://lozipotod.ru/strik?utm_term=the+odd+couple+2015+full+cast PDF link annotation
    • https://xososikanezav.weebly.com/uploads/1/3/4/8/134892973/5067614.pdfIn PDF document text
    • https://nonovobuzodeku.weebly.com/uploads/1/3/5/3/135348203/8f281912dfe53e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417037/normal_5fdffa25e21e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468530/normal_60226abfe412b.pdfIn PDF document text
    • https://jedogivezuse.weebly.com/uploads/1/3/4/8/134862252/pebuzitubenided.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425514/normal_6049920b3ac36.pdfIn PDF document text
    • https://cdn.sqhk.co/pofaxiniraz/jcmTvIt/robovox_voice_changer_pro_1._8._4_apk.pdfIn PDF document text
    • https://jujodupif.weebly.com/uploads/1/3/2/3/132303189/23b8c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366057/normal_5fec9f4b8a33d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380084/normal_6069981b0a0e9.pdfIn PDF document text
    • http://confirmationhelpcenter.com/55843436848phsar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428335/normal_60083fd89fa2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419826/normal_600fee1f4d1cf.pdfIn PDF document text
    • http://reweder.site/tawejosanorelefdu004.pdfIn PDF document text
    • http://visionnew.xyz/vibuvemuvorinapidekedsyw3.pdfIn PDF document text
    • https://roneresikixa.weebly.com/uploads/1/3/4/4/134476702/6447871.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380675/normal_5fe4a22b4bc31.pdfIn PDF document text
    • https://cdn.sqhk.co/mejiwimuza/fmIFt7M/slice_food_delivery.pdfIn PDF document text
    • http://fbdirect.site/637154673546o9ge.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://gepewulokakojab.rf.gd/74425835199.pdfIn PDF document text
    • http://vuwixirad.epizy.com/dictionary_download_for_pc.pdfIn PDF document text
    • http://fujebudavitasoz.epizy.com/ascension_deckbuilding_game_rules.pdfIn PDF document text
    • http://dasujisetojasel.epizy.com/bilingual_english_malayalam_dictionary_software_free.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001394b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1394B 4352 bytes
SHA-256: 3739200514b3ba633628de8b585696b56947ba14553fb669873a39672b5f453c
font_01_sfnt_off0001487f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1487F 5272 bytes
SHA-256: cfde5d5c0c60850e2eaa0ffacc8d09caf07321eb2c1e534619234c963a9c52b9
font_02_sfnt_off00015a8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A8D 12392 bytes
SHA-256: bb32314cd2e644a3a8b41a3ffe1d020536080b381b7c74743f6a4f3a672a3d3b
font_03_sfnt_off000182d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x182D0 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333