Malicious PDF — malware analysis report

Static analysis result for SHA-256 f462d22033450631…

MALICIOUS

PDF

76.9 KB Created: 2021-04-23 18:13:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 8d94464ae69d7af071736ff796dd07ef SHA-1: 21a82b8b19d016f620bfdde4f4d5672fd2a4e1f6 SHA-256: f462d22033450631008457d419e42697f38e88bee2b2630a237187831ca428f3
146 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan and an ML classifier indicating maliciousness. The document contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain. The presence of a callback phishing lure suggests an attempt to trick the user into contacting a malicious entity. No scripts were extracted, but the overall structure and URL distribution are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://maypoin.ru/strik?utm_term=how+to+use+halfords+smart+charger+plus PDF link annotation
    • https://cdn.sqhk.co/sejixikerut/vkjahcV/most_popular_tiktok_rap_songs_2019.pdfIn PDF document text
    • https://ravemazezaj.weebly.com/uploads/1/3/4/8/134885195/dizetu-gonoxutajedag.pdfIn PDF document text
    • http://x-bionic.shop/razawetapizab8049v.pdfIn PDF document text
    • https://cdn.sqhk.co/nakotuba/jatI6gf/hexaware_technologies_stock_price_today.pdfIn PDF document text
    • https://xabizukilitexe.weebly.com/uploads/1/3/4/3/134335342/suwesetibed-nemajaruxit.pdfIn PDF document text
    • http://tizadejaso.getenjoyment.net/96829102065.pdfIn PDF document text
    • http://sportplays.ru/siminorogegatupol29mfl.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • https://cdn.sqhk.co/vofosutuwo/cgejdtT/17791302844.pdfIn PDF document text
    • https://zanolunib.weebly.com/uploads/1/3/4/6/134664537/3b46d3b2e01f.pdfIn PDF document text
    • http://ganedoxumizaj.sportsontheweb.net/33923575553.pdfIn PDF document text
    • https://taxajoberaruvu.weebly.com/uploads/1/3/4/3/134320235/7408473.pdfIn PDF document text
    • https://povejuzulegaje.weebly.com/uploads/1/3/5/3/135301343/zivor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9158968-5ec4-44ab-b5ba-d640ab5e8778/why_is_my_wireless_mouse_and_keyboard_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c308a62a-9e86-47cb-8319-e3677afb678e/how_to_make_ro_water_drinkable.pdfIn PDF document text
    • http://wavexijazibivat.myartsonline.com/toposijodaxigetabot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c940c28-385c-43c0-a58a-df009fb0fb99/zabewojejin.pdfIn PDF document text
    • https://8ed62699-7d02-4439-b935-4286882ef7d4.filesusr.com/ugd/229b11_431f6db914794b9cbf1caf6f463e6fcc.pdf?index=trueIn PDF document text
    • https://899154e9-876a-4ab4-94d5-c8ef2aed10f2.filesusr.com/ugd/dcf9ad_84426dffba9a42dfae383c6d310b0840.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a722bd4f-2af3-4ba5-81e0-1346ff386f77/mr_coffee_iced_coffee_maker_with_reusable_tumbler_where_to_buy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bf1592a-d369-4347-bfcc-c1e479c1f495/vatikufetikaroso.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_off0000edd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD8 5624 bytes
SHA-256: 3500c53fc350e48ade0650cc4745107dcd39603989006522db32d5fa57a0f657
font_01_sfnt_off000100e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E0 10744 bytes
SHA-256: 13c0cd967e70d59cc2b59ac40a26001b69ce048312a59dc626a4fcc291cbc07d