Malicious PDF — malware analysis report

Static analysis result for SHA-256 aab7d14d29469d7c…

MALICIOUS

PDF

71.8 KB Created: 2020-11-18 15:25:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: f0f0154fa1ddba28a8a6df94619d5cc7 SHA-1: 5e25aab719b8bb46476fd49d339a7a31fa199199 SHA-256: aab7d14d29469d7cbf91ace424819d3c308a03e92bab215d89f58bff83ad4081
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffset.ru/123?utm_term=holly+hobbie+cake+pan+instructions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379852/normal_5f9b38a460890.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366642/normal_5f88c38777301.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374703/normal_5f92053bbc3d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367960/normal_5f8da0b0b6981.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417422/normal_5fa54d098c5e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384460/normal_5f9a2d35b109e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386333/normal_5f986c15767b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386607/normal_5f97b84225389.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369773/normal_5fa44b9764271.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/bojafazes/wamodetuxinedunaguxe.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/medical_investigations_cross_word_emergencies_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/barneys_farm_triple_cheese_grow_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/84186791455.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/52803639110.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/63499792753.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD6 3324 bytes
SHA-256: 3e93f82091468471049bf03a3af6ff77fa568ddb18d22eae42be506bec5e2a62
font_01_sfnt_off0000d7b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B3 5288 bytes
SHA-256: 468caa5f6f7d53d91c7d80502a13a464bd90c9f4fe2cfe99d09a0f610983d1cc
font_02_sfnt_off0000e9ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AC 12088 bytes
SHA-256: 2a3f80b456d7be616760d3b28d76355b7bcc5a74404cc8e28671d46c22d21fb6