Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ddf4bb2c7ae8d91…

MALICIOUS

PDF

73.7 KB Created: 2021-05-02 03:22:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 53b034d1e90b4eadfb2a9afbce648b64 SHA-1: 7873aff23ebad0a4cd5b4c587535298dde3e01ac SHA-256: 1ddf4bb2c7ae8d91cd5828b2b0b9c55d96a472748342e2ede8a94de6d0e3c435
126 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to disposable domains and link farms, a common tactic for phishing or distributing further malware. The PDF structure and embedded links suggest it's designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xajibur.ru/strik?utm_term=are+jeep+grand+cherokee+srt+reliable PDF link annotation
    • http://ilmahli.com/333008580145l1c0.pdfIn PDF document text
    • https://cdn.sqhk.co/kefofepobam/dhcibja/road_rash_rider_apk.pdfIn PDF document text
    • http://www-sfr-fr-monespace.com/vomavazoteradevawaxoru7o3ni.pdfIn PDF document text
    • https://cdn.sqhk.co/sadirurafixi/LBvjjDK/tefovuvoxanivataru.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/5icmGhi/1668299460.pdfIn PDF document text
    • https://cdn.sqhk.co/jelasusoved/GjexjdH/color_splash_card_game.pdfIn PDF document text
    • https://cdn.sqhk.co/luzigagoguna/jihbjeo/ants_life_cycle.pdfIn PDF document text
    • https://cdn.sqhk.co/barosevarega/gcjbjgS/teruja.pdfIn PDF document text
    • http://filfex.ru/primary_amenorrhea_acog_guidelinesefptx.pdfIn PDF document text
    • https://cdn.sqhk.co/xalesikozip/e22jbhg/moscow_idaho_verizon_store.pdfIn PDF document text
    • https://cdn.sqhk.co/nenuguvan/Goie1gj/mail._ru_email_app_download.pdfIn PDF document text
    • http://igonlinesupport.com/human_anatomy_and_physiology_10th_edition_apa_citation8u7i9.pdfIn PDF document text
    • https://cdn.sqhk.co/diwewiduvaz/gdAEL68/gta_liberty_city_stories_apk_ppsspp.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/a5134e36-311d-4d1a-afa3-a10b63a08191/lepuxe.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/65002853522.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/pegipovinujarawesu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9a07de9-f47d-4e0c-ad1c-0b15cf86128c/jazopuminubawuwolaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47910b50-fb86-45bb-ae40-8a3747044569/how_to_get_la_fitness_membership_key_tag.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/a_ganesh_babua_video.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_off0000e095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE095 5604 bytes
SHA-256: 573e22f156acaee186baec5f31a16c93f3a9fef7a8c697001a40ecaa7d0d9ad5
font_01_sfnt_off0000f399.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF399 11124 bytes
SHA-256: 3d202618b94664c41263446f9362671084bcf950cd3dfce727ddd8d5777cd167

Open this report in the interactive analyzer, or submit your own file for analysis.