Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7032dfa87d0716a…

MALICIOUS

PDF

78.0 KB Created: 2021-04-22 21:42:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 2d95a92887b8bb0d25029d0b0e65df53 SHA-1: 2e79c099ea312c964e855be69060f0a9079a25a5 SHA-256: f7032dfa87d0716a051f1cb77db1ec895091b18ace9afdabaa282d008705927f
126 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. The presence of numerous external URIs, many hosted on disposable domains, indicates a link farm designed to redirect users to malicious content. The primary URL, 'https://lozipotod.ru/strik?utm_term=how+do+you+rewrite+equations+in+slope+intercept+form', suggests a phishing or scam lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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 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://lozipotod.ru/strik?utm_term=how+do+you+rewrite+equations+in+slope+intercept+form PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368977/normal_5fdf6f48bd420.pdfIn PDF document text
    • https://cdn.sqhk.co/pavoraxebute/uigihid/audio_visual_music_player_apk.pdfIn PDF document text
    • https://lazumuron.weebly.com/uploads/1/3/4/8/134863931/rupuluzi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402938/normal_606b29ef2372b.pdfIn PDF document text
    • https://cdn.sqhk.co/xedomobedusi/eOggLSq/32714805469.pdfIn PDF document text
    • http://lumogodasekepi.mypressonline.com/reading_skills_in_communication.pdfIn PDF document text
    • https://xaxibilezulaf.weebly.com/uploads/1/3/4/0/134096047/borovojisopeji-vuxexowe.pdfIn PDF document text
    • https://cdn.sqhk.co/puburasar/EgghbuO/non_enzymatic_browning_maillard_reaction.pdfIn PDF document text
    • https://cdn.sqhk.co/pilimisoduk/dhegegg/nesovavo.pdfIn PDF document text
    • https://cdn.sqhk.co/kofelejezem/fX3lijh/pirates_showdown_premium_mod_apk.pdfIn PDF document text
    • https://gefogujuper.weebly.com/uploads/1/3/4/0/134012332/gavituxiku.pdfIn PDF document text
    • https://pefuwopiluja.weebly.com/uploads/1/3/4/5/134592541/7078900.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476147/normal_606b6f0acf8a2.pdfIn PDF document text
    • https://bosudire.weebly.com/uploads/1/3/4/4/134456289/9855b8cd2bd1661.pdfIn PDF document text
    • https://jijovozezara.weebly.com/uploads/1/3/1/1/131163872/vixolenijozadi_fofaxudase.pdfIn PDF document text
    • https://ziralupaw.weebly.com/uploads/1/3/1/3/131379221/jawiwabu.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/9326b297-4d87-4894-938f-13e82d0a2001/what_were_the_economic_consequences_of_the_industrial_revolution.pdfIn PDF document text
    • http://misanedajog.myartsonline.com/xefes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae91d431-9956-43e4-b1e3-dbe8e5c4ed7a/is_johnny_silverhand_dead.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa2d9c9d-cc47-4f25-a06d-5d080bc26e7f/99996057287.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f541486c-b9c1-47fc-8328-dc8ef80abba5/twilight_new_moon_2009_full_movie_download_in_hindi_filmyzilla.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21407e4f-f8d9-4ef8-9051-cd930f852b41/10157962620.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000daf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF7 5584 bytes
SHA-256: 6d398020526c463443ee3302f49517e247077025abbc4301bcd4012ac65a5cf5
font_01_sfnt_off0000edf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF2 11324 bytes
SHA-256: ae0a5e0e64c1ed9fe047caee44425fea840bed1143c69950953b46bd3c26bdbb
font_02_sfnt_off00011501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11501 16080 bytes
SHA-256: ae4c1039909c6b18400a693790947520403f0a9c3cdc5bdc37254682f4165006