Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c051f7ad2df11e6…

MALICIOUS

PDF

73.8 KB Created: 2021-02-22 06:05:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8649ceae87fec56d048ec9843bd77b17 SHA-1: 4327e8cc34e7d440cea9c74fb5edd1ff7ff996f6 SHA-256: 1c051f7ad2df11e61ed6fcf0de96811a2f6be803aae2770b1c30af6fa08d7a6b
136 Risk Score

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/wb?keyword=the%20reluctant%20fundamentalist%20summary%20and%20analysis PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384299/normal_602ace22622fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446168/normal_6020b4d5cc8a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490265/normal_5ff48b87e8f74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447079/normal_6025b33960c65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415327/normal_60199bb0f3dd2.pdfIn PDF document text
    • https://cdn.sqhk.co/jidulopavoji/hiEiaFw/99173327270.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376599/normal_5ffdf497a3385.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393632/normal_5fdf8e013ecf6.pdfIn PDF document text
    • https://cdn.sqhk.co/kolusugego/H7jdfii/32827165448.pdfIn PDF document text
    • https://cdn.sqhk.co/lokabawopup/ijhaGVb/business_card_scanner_ios_app_free.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/vufuzewasi/18252868705.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/52821845884.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/prophylactic_antibiotic_guidelines_dental.pdfIn PDF document text
    • http://jopakete.rf.gd/kexexitududu.pdfIn PDF document text
    • http://wemiwapava.epizy.com/86196934220.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_off0000e548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE548 5312 bytes
SHA-256: f83e1a37a44cd4278653951865d901dd2fb56a114f56535f58bda3f401c0fd0b
font_01_sfnt_off0000f737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF737 10252 bytes
SHA-256: f063b866fc1308ca78c80ec8a69f2764726c25d60884fce34db836cb9344f0a5