Malicious PDF — malware analysis report

Static analysis result for SHA-256 68044e325e7cecde…

MALICIOUS

PDF

77.5 KB Created: 2021-03-15 08:21:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: b028dbc49d25e0631a215558ee4d182f SHA-1: ed5e8fd923b51859dac3f0169f2d86b09bce99e1 SHA-256: 68044e325e7cecde99fb6901c6d9d87f75a08919c566ea01f34d15e4b71ac61c
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to unknown or potentially malicious domains, suggesting it functions as a link farm or phishing lure. The document body, though partially corrupted, references 'current affairs pdf april 2020', aligning with the phishing pretext of providing valuable content to entice clicks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/award?keyword=adda247+current+affairs+pdf+april+2020 PDF link annotation
    • http://magufeju.iblogger.org/aswb_practice_questions_free_online.pdfIn PDF document text
    • http://gekifek.scienceontheweb.net/46907409764.pdfIn PDF document text
    • http://berozabekep.sportsontheweb.net/37063126668.pdfIn PDF document text
    • http://jixuvofariva.iblogger.org/salary_expectations_answer_examples_uk.pdfIn PDF document text
    • http://winoxolupuvil.getenjoyment.net/how_to_find_the_age_of_a_reliance_water_heater.pdfIn PDF document text
    • http://zinabexodepo.iblogger.org/actors_in_public_policy_making.pdfIn PDF document text
    • https://cdn.sqhk.co/buvaboda/jjxALhe/globe_at_home_prepaid_wifi_no_antenna.pdfIn PDF document text
    • https://cdn.sqhk.co/lajoroteb/cGthbHs/letter_to_invite_for_interview_template.pdfIn PDF document text
    • http://wakekuluma.iblogger.org/xotadosegupug.pdfIn PDF document text
    • https://cdn.sqhk.co/poronujefino/iZjh5Cn/sekokagegigokewoli.pdfIn PDF document text
    • http://sakaxek.mygamesonline.org/personal_pronouns_and_possessive_pronouns_exercises.pdfIn PDF document text
    • http://zofugef.mypressonline.com/kilawujezizibanidusixesav.pdfIn PDF document text
    • https://cdn.sqhk.co/xeloxilava/uCpEUge/56555103209.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://217ba8a6-026c-4a9e-b1ce-2eadff0a4a08.filesusr.com/ugd/3d7af5_149235cfbbe34feda71d5d6eceb32d8b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f400e46e-0610-48df-acd3-403b74e4f660/what_is_patriotism_in_english.pdfIn PDF document text
    • http://gakajitaju.atwebpages.com/42887738483.pdfIn PDF document text
    • https://2987c0f4-171e-4473-b3f1-a5468658115b.filesusr.com/ugd/75ff8a_e6c401029cd44698aefaef1b1624cd01.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a10d38a-c7ea-4087-904f-3314a0653768/how_do_you_find_the_angle_measures_of_a_rhombus.pdfIn PDF document text
    • http://piwakitidi.onlinewebshop.net/how_to_put_image_on_top_of_another_image.pdfIn PDF document text
    • https://31c8a3d4-0132-49f1-a04f-09c79d03e01f.filesusr.com/ugd/a4da84_7cae4eba0ee6409d8fa8a2a6ca62000b.pdf?index=trueIn PDF document text
    • http://muloluj.rf.gd/11035533056.pdfIn PDF document text
    • http://bekusisit.atwebpages.com/how_to_download_starbucks_partner_app.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_off0000f046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF046 5580 bytes
SHA-256: dc225e550b2f18d3fb94eee66bf75cf33470d2883431ba6f1d8841d6f66386aa
font_01_sfnt_off0001035f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1035F 11040 bytes
SHA-256: 169eaf5f7219cdcdc992858dc2894dd480eda511a5a8f7465c43d97e135c866a

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