Malicious PDF — malware analysis report

Static analysis result for SHA-256 d30c3aee2697e746…

MALICIOUS

PDF

41.3 KB Created: 2021-04-03 21:46:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 708c812b93a92657ba8c78f0a0523822 SHA-1: a585ea048bce3165de1d48b511fbc4d67fef34c7 SHA-256: d30c3aee2697e7466f2bb71864c1c53bce9a0764d42404beb7c1aed11ac2c5a2
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains numerous external links, many hosted on disposable domains, suggesting an attempt to redirect users to malicious content or phishing pages. The presence of a click-outward action and a small file size further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7383

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://botokaw.ru/strik?utm_term=is+the+2019+nissan+frontier+reliable PDF link annotation
    • https://cdn.sqhk.co/sipebililofo/jfBgigg/kunuregor.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/waxixofotejuvefu.pdfIn PDF document text
    • https://tunibedexorole.weebly.com/uploads/1/3/5/3/135350281/joninijome.pdfIn PDF document text
    • http://vonexalux.sportsontheweb.net/automatic_voltage_regulator_working_principle.pdfIn PDF document text
    • https://cdn.sqhk.co/pisomuma/figgjQB/ducks_in_a_row_squirrels.pdfIn PDF document text
    • http://xenalebosob.scienceontheweb.net/595733152.pdfIn PDF document text
    • https://mixojokujize.weebly.com/uploads/1/3/4/3/134387696/narigaj.pdfIn PDF document text
    • https://jumifusat.weebly.com/uploads/1/3/4/6/134629025/c8298148fecdd.pdfIn PDF document text
    • https://fatitabo.weebly.com/uploads/1/3/4/7/134757356/332aa5.pdfIn PDF document text
    • https://cdn.sqhk.co/kuxixixixi/cYRHjaG/customer_quarterly_business_review_template_ppt.pdfIn PDF document text
    • https://lupemofuxuxutuj.weebly.com/uploads/1/3/1/3/131383332/dapemitokogal-vawovogixof-wubatitesaxinej.pdfIn PDF document text
    • https://jurefuzosapob.weebly.com/uploads/1/3/4/9/134901670/7c25e0f47356de5.pdfIn PDF document text
    • https://cdn.sqhk.co/zimidenex/ohdpPja/77876813762.pdfIn PDF document text
    • https://likufuzojelawaf.weebly.com/uploads/1/3/5/2/135298946/84c20.pdfIn PDF document text
    • https://cdn.sqhk.co/turovonunido/gcaWD6C/7912387489.pdfIn PDF document text
    • https://dewapapowirise.weebly.com/uploads/1/3/1/4/131438248/22bc4fca3472d8.pdfIn PDF document text
    • https://worubagazew.weebly.com/uploads/1/3/4/6/134639575/vufil.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/49802186312.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/under_the_dome_season_3_episode_2_dailymotion.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/how_to_program_my_directv_remote_to_my_vizio_sound_bar.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/24297360591.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/33881033402.pdfIn PDF document text

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