Malicious PDF — malware analysis report

Static analysis result for SHA-256 c336a7ead1dd7619…

MALICIOUS

PDF

76.7 KB Created: 2021-03-07 16:41:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f5839c39e7fc7a520da8411ae0793783 SHA-1: 798b5cd0d1af82d24e0e84095aa054297899c3fc SHA-256: c336a7ead1dd7619f4987922265bb75bb97b83b5fc3133ac2f6dcb3f8162fa97
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to suspicious domains and are likely part of a link farm for SEO manipulation. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically phishing. While no scripts were directly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious sites, potentially for further payload delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/wix?keyword=bench+dog+holes+guide
    • http://pofuxubilet.sportsontheweb.net/dijojagiduse.pdf
    • https://vasuwogi.weebly.com/uploads/1/3/4/0/134017955/c3a6cbeb.pdf
    • http://mesanezedid.mypressonline.com/rizekalesepoboropot.pdf
    • https://wolunogejafijut.weebly.com/uploads/1/3/4/6/134649672/5593231.pdf
    • http://zibepifutidi.sportsontheweb.net/910963907.pdf
    • https://cdn-cms.f-static.net/uploads/4477401/normal_60259934329bc.pdf
    • http://mobufuwiwid.medianewsonline.com/how_to_open_microsoft_wireless_mouse_5000.pdf
    • https://tazumeter.weebly.com/uploads/1/3/1/4/131438167/6046559.pdf
    • https://cdn-cms.f-static.net/uploads/4388405/normal_603f40ea77487.pdf
    • https://static.s123-cdn-static.com/uploads/4417413/normal_5fcd7ad05fba2.pdf
    • https://naxizugopigonav.weebly.com/uploads/1/3/1/4/131408516/zamotefaburos_ziwuduwikum_pavemoli.pdf
    • http://pazujiz.mygamesonline.org/jeviwetote.pdf
    • https://ximetekorexuven.weebly.com/uploads/1/3/4/4/134489871/zefibumu.pdf
    • https://cdn-cms.f-static.net/uploads/4456372/normal_6017142467b9d.pdf
    • https://static.s123-cdn-static.com/uploads/4368469/normal_5ff75c4821c06.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3885b1f5-8060-428d-98ed-54903b24ca30/fezifakixumegezebumedag.pdf
    • https://uploads.strikinglycdn.com/files/318ef037-533e-48fb-93ab-67354e258f68/what_is_a_jeep_srt8.pdf
    • https://uploads.strikinglycdn.com/files/fdbb0507-8d6b-4093-9a83-5b90162c6fb1/psychology_books_for_free.pdf
    • https://uploads.strikinglycdn.com/files/7171b472-5164-403a-86d6-092ec10fd0ac/plantronics_bluetooth_headphones_reset.pdf
    • https://uploads.strikinglycdn.com/files/ac4e36b2-7d9b-4f2a-941b-eb1baf895371/healthometer_scale_error_lo.pdf
    • http://vakogez.myartsonline.com/the_secret_life_of_pets_2_chloe.pdf
    • https://uploads.strikinglycdn.com/files/002b4a03-8ccc-47ac-b1fe-aa1d76e69b63/midland_wr_120.pdf
    • http://niwurekatexo.atwebpages.com/ludamerejelodikixitifuw.pdf
    • https://uploads.strikinglycdn.com/files/8792b2c9-5bb3-4b53-8031-9fe7cbfdbb68/speak_laurie_halse_anderson_audiobook_free.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efec.bin
9d221eb64dee60ffedbabe53b74ef7449586281a0e271d4f88d142ac98e9cf9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFEC 4944 bytes
font_01_sfnt_off000100c6.bin
7e3a627bf476b0d2505e3cce087b57bf1e64d9814c1ed25257948780757a6f44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100C6 10756 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.