Malicious PDF — malware analysis report

Static analysis result for SHA-256 09a82be8f65908fa…

MALICIOUS

PDF

70.0 KB Created: 2021-03-19 21:15:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c9dcc87d4dc7294518b20540d2356f27 SHA-1: 4c4ed614d02de1d8aa4d803a6503ec5c962070fe SHA-256: 09a82be8f65908fabb6f5ac8617169984a95bc06c9d32c9cdbe527d08387b365
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://golowaki.ru/wix?keyword=sas+tower+defense+hacked PDF link annotation
    • https://xatevixi.weebly.com/uploads/1/3/4/6/134651360/giliwevoninenopu.pdfIn PDF document text
    • https://wisamifogafize.weebly.com/uploads/1/3/4/5/134598642/xuludukazodobat.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/kijelopazekune/cessna_turbo_210_performance_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ed5105f-ddc2-41ae-ae77-29591d6985e3/84232385433.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/45685629500.pdfIn PDF document text
    • http://wepaxilex.epizy.com/barney_stinson_playbook_english.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/sharp_air_conditioner_window_unit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4027e27f-c253-4ad6-98bd-32d795f53770/80026632511.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/15038413062.pdfIn PDF document text
    • http://fegifujeviba.epizy.com/36493360461.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3ae79dc-352a-4950-976c-659c0a18f511/8146652003.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/zazekojowijoxukibiwime.pdfIn PDF document text
    • https://4abf464d-34d5-4c80-8de5-e64f30e04530.filesusr.com/ugd/8b3eb5_43d237b709044f3e999ca6ba06de490f.pdf?index=trueIn PDF document text
    • https://5fa60de5-32ab-41ac-ba65-77330e21e623.filesusr.com/ugd/2e16aa_0897aaa1702c4f3ca1332bd2f445bf1f.pdf?index=trueIn PDF document text
    • http://jiwenufaxo.epizy.com/vopiwuzosinubuvarage.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/national_antibiotic_guidelines_2017_philippines.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/arcsoft_totalmedia_3._5_free_crack.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_off0000d23b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD23B 5336 bytes
SHA-256: 79f730c629b603be88ecd6d16123e8451ec0fefc41bf4e0acd1a058a9ef0f517
font_01_sfnt_off0000e46e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE46E 10900 bytes
SHA-256: 39eeead46b3899e15e532d55c636e62d23aa8cbd062f4bb7380c7df57b60be47

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