Malicious PDF — malware analysis report

Static analysis result for SHA-256 9489363625dbb25d…

MALICIOUS

PDF

66.3 KB Created: 2021-02-13 21:23:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 24fbadd1b54a4067fcafe67386ff5350 SHA-1: 47e991964c6f9d835c6b6ab9927b71c62b70aece SHA-256: 9489363625dbb25dc92f49bafcdc8831053b65db1f012aefbc6e63dcd648b0be
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/wix?keyword=clarkston+high+school+football+coach PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4383471/normal_60091ae127060.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501479/normal_602716551213e.pdfIn PDF document text
    • http://kfcrabota.ru/chainsaw_file_guide_bunnings6wq1j.pdfIn PDF document text
    • http://azakalaza5.xyz/british_sports_car_informally_crosswordv9o6c.pdfIn PDF document text
    • http://badge-verification-center.com/pontoon_boat_loading_guidesqxteg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407780/normal_602525c22402a.pdfIn PDF document text
    • http://demask.space/poe_golemancer_elementalist_3._8vs7dh.pdfIn PDF document text
    • https://kuvixajixi.weebly.com/uploads/1/3/1/6/131637850/mexumabanedijanifuj.pdfIn PDF document text
    • http://lnstagramcopyrightservices.org/agrobacterium_mediated_transformation_steps855q1.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/sugosubexez/logical_reasoning_test_with_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/jupoti/musesefozutetiburodufov.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/whatsapp_para_windows_vista.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/zubinidejolixagudiw.pdfIn PDF document text
    • http://xilibosukotijob.epizy.com/60054388134.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_off0000c85c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC85C 5252 bytes
SHA-256: 67b5607d98bd82dd6108b2fa5f5ca8d6f93e6e1b3f3111c5b15b40af40748a9f
font_01_sfnt_off0000da36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA36 9912 bytes
SHA-256: 8ad4e0cd981ae9e4b10950b275644fd32e2a7ccbcd209e419feed1eacac63686