Malicious PDF — malware analysis report

Static analysis result for SHA-256 faa6c986dfd854a1…

MALICIOUS

PDF

69.2 KB Created: 2021-03-04 20:03:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: ba60b0b330d24efc4073cbe4311d160e SHA-1: 8f7cf1719d2687ccdedfc69554e2e9cd0174ac1a SHA-256: faa6c986dfd854a14487f9f5244974bafc871fe1ea8025a0f211edcf3371b0f1
116 Risk Score

Malware Insights

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

The sample is a PDF document flagged by ClamAV as a phishing trojan. Heuristics indicate it contains a callback phishing phone lure, suggesting it's designed to trick users into calling a number for a fraudulent purpose. The embedded URL points to a suspicious domain, likely part of the lure or a secondary payload delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/aws?utm_term=bergey%2527s+kia+lansdale PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4444117/normal_5fd2c365d4fb1.pdfIn PDF document text
    • http://want-seo.ru/adobe_illustrator_free_old_version78g49.pdfIn PDF document text
    • http://servempieza.site/ps4_vr_roller_coaster_simulator0tagi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369158/normal_602d406ceeafb.pdfIn PDF document text
    • http://pokezokebawi.mygamesonline.org/heat_transfer_jp_holman_solution_manual.pdfIn PDF document text
    • http://acupofjacob.com/jembo_cable_catalogbqaax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389824/normal_5fd92fdc8135c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490930/normal_5fc8198bcc8a2.pdfIn PDF document text
    • http://azakalaza5.xyz/grigri_descente_rappeldh0g0.pdfIn PDF document text
    • http://sobakin.space/polk_omni_sb1_plus_bluetooth_setuptyeoh.pdfIn PDF document text
    • http://sevastopol.sale/what_is_the_wps_button_on_my_centurylink_routerwctiu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408589/normal_5fd2a38784523.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/xakajoziwibi/29697521455.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/70410874636.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/red_a_crayons_story_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/89581940514.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/android_sdk_windows_xp_32_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/nujitamebalawuriporunubax.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_off0000d26e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD26E 5240 bytes
SHA-256: c2fdfd5231afa23988f1cb57c28f5dd77652e60b032237563b46302c642ab8c2
font_01_sfnt_off0000e466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE466 10352 bytes
SHA-256: 1918f153ad7cb043dedcd3dcaca27d1729a5c0086d2cd4683a142d0fd99f7627

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