Malicious PDF — malware analysis report

Static analysis result for SHA-256 62e1ecc47a80abc2…

MALICIOUS

PDF

86.9 KB Created: 2021-04-20 13:19:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 787993c1924780cdb8e4118ed9932708 SHA-1: 695ff45ad2fb2e0f6859c92db6e096083bf904d3 SHA-256: 62e1ecc47a80abc2850ee9a4087391d187d33b91221c2398b1de196ebeddddf1
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to contain metadata related to wkhtmltopdf and song lyrics, suggesting a deceptive lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 5

  • 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 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
  • 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://botokaw.ru/strik?utm_term=yo+sin+tu+amor+camila+acordes+ukulele PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486051/normal_606c92ccd22db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460247/normal_600e0337d92df.pdfIn PDF document text
    • https://cdn.sqhk.co/vuveleni/iajjfij/stickers_de_free_fire_para_whatsapp_2019.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378836/normal_5fdfa6cf680b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418762/normal_5ff84552c0b2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408482/normal_5fdf121ef129b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377100/normal_602b345b04922.pdfIn PDF document text
    • https://cdn.sqhk.co/woledibiroju/gcYZXhc/subway_restaurant_food_menu_with_prices.pdfIn PDF document text
    • https://cdn.sqhk.co/kululojilo/7jgihij/gems_educational_books_holiday_worksheet_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450730/normal_6026e930e6f9e.pdfIn PDF document text
    • http://filitopalanima.22web.org/27044876948.pdfIn PDF document text
    • http://memexeti.66ghz.com/5929419771.pdfIn PDF document text
    • https://cdn.sqhk.co/lojibuwe/Whc6gfx/43028811531.pdfIn PDF document text
    • https://cdn.sqhk.co/sonometa/ijhhbib/fowozujenas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/c71cdd82-3ea8-41da-8857-a9bd42d5afee/kidde_kn-copp-3_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4f580f5-fc6a-4705-a073-5ed284c4cb36/how_do_i_fix_realtek_hd_audio_manager_missing_in_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83a94a79-510a-450b-8aaa-0e6712271ff7/29005020493.pdfIn PDF document text
    • https://5b2b9875-3923-4577-9ef6-0527498c95e7.filesusr.com/ugd/4e6dd5_bf649c014321487bbeee33b6adc2ceb8.pdf?index=trueIn PDF document text
    • https://1c437d0a-cccb-4a8a-93f1-39e0b5126915.filesusr.com/ugd/b91566_f850ef37f9e24113b1bcbd3039ea0187.pdf?index=trueIn PDF document text
    • http://sujetokotew.rf.gd/77201408096.pdfIn PDF document text
    • http://divogidiguxofib.epizy.com/2620336856.pdfIn PDF document text
    • https://62abf401-5fc9-4991-ac00-cb6a0c8cf8ec.filesusr.com/ugd/e4ff69_9ef43509e78448aab9e44224689a0b19.pdf?index=trueIn PDF document text
    • http://kotopofixivu.rf.gd/55624891676.pdfIn PDF document text
    • https://ba789de2-c385-43ee-b32d-a34c698d1993.filesusr.com/ugd/b7082a_d6c7e73d2e2c4b819094418e8fb18b7e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d8e62ce-1cea-47b7-84fa-1d70a6cfbcd8/29747663923.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10544 4992 bytes
SHA-256: 84d5ce19b8325189aafeb16a474b92ac6bbfd550ecb45327857c63dcd858c71e
font_01_sfnt_off00011611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11611 13448 bytes
SHA-256: 489a15b1c638a8ef09af70c076c817f4a2fd74d46b552f855f4f46ad2736fa2b
font_02_sfnt_off00013fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FED 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378