Malicious PDF — malware analysis report

Static analysis result for SHA-256 89816f7a0347726a…

MALICIOUS

PDF

55.7 KB Created: 2021-06-01 05:55:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17161164ddaf974b1cd66746f6c44cf3 SHA-1: c75f46df14ab9a526e82d7d3cf1fd13d76ad773b SHA-256: 89816f7a0347726af73b79f4505ba073d86b06b68275bc9600a2f8748b4d21c1
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits characteristics of a phishing lure, including an image-only design and a clickable link disguised as content. The embedded JavaScript and the presence of numerous external links, particularly to 'medvor.ru', suggest an attempt to redirect users to malicious sites. ClamAV detection and ML classification further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5074

Heuristics 6

  • 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
  • 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 55 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://medvor.ru/pbw?utm_term=how+to+download+hotstar+app+videos+in+android+mobile
    • https://cdn-cms.f-static.net/uploads/4448332/normal_6043fadd83c12.pdf
    • https://cdn-cms.f-static.net/uploads/4445881/normal_6062ad70d733c.pdf
    • https://static.s123-cdn-static.com/uploads/4380395/normal_5fe54ac8a2074.pdf
    • https://static.s123-cdn-static.com/uploads/4369189/normal_600654bde26a8.pdf
    • https://static.s123-cdn-static.com/uploads/4453336/normal_5fc9eb5b91a3e.pdf
    • https://cdn-cms.f-static.net/uploads/4446914/normal_604793fc90d6b.pdf
    • https://vemesefopega.weebly.com/uploads/1/3/4/6/134684253/wowesa_losafadukonise_virasisopudonet.pdf
    • https://static.s123-cdn-static.com/uploads/4460677/normal_5ff4d255dc3d2.pdf
    • https://kadeniki.weebly.com/uploads/1/3/4/0/134097858/jeviz-galuwurugoto.pdf
    • https://uploads.strikinglycdn.com/files/678b1c83-31b2-444c-9cd8-8c2d82ad56a7/27830734968.pdf
    • https://uploads.strikinglycdn.com/files/750a3358-ce67-4bcc-b594-dfeb220f6773/35505730026.pdf
    • https://uploads.strikinglycdn.com/files/44da0624-7776-491d-a9db-52aad16ba2b8/what_is_radical_acceptance_and_how_can_it_help_me.pdf
    • https://uploads.strikinglycdn.com/files/51d1b3cf-895f-4270-ac3c-ba657ecc44f6/how_to_learn_arabic_online_for_free_audio.pdf
    • https://uploads.strikinglycdn.com/files/711a8b2c-2b50-4447-85a3-823df82fffcb/brene_brown_definition_of_trust.pdf
    • https://uploads.strikinglycdn.com/files/9e4c92c1-0a39-4f9b-82b0-42c1d2ba8d2b/videoder_download_per_iphone.pdf
    • https://uploads.strikinglycdn.com/files/2145a5f8-d472-4447-bc88-0722a2cb4514/lolopuvuzola.pdf
    • https://uploads.strikinglycdn.com/files/32829f8e-179c-4e56-9a10-46dfc9b77b4e/84363497768.pdf
    • https://uploads.strikinglycdn.com/files/29f6f38e-597a-4452-aa1d-83b8b8fa63a4/zatadobalowel.pdf
    • http://wejojixi.pbworks.com/f/passive_voice_past_continuous_tense_exercises.pdf
    • http://sizolasipape.pbworks.com/w/file/fetch/144412449/kowevemojopulusirixafuva.pdf
    • http://zopujoxobug.pbworks.com/w/file/fetch/144424101/cellular_respiration_grade_11_questions.pdf
    • http://sikovifif.pbworks.com/f/vabojoboxenaf.pdf
    • http://togusan.pbworks.com/f/mame_2003_retroarch_core_download.pdf