Malicious PDF — malware analysis report

Static analysis result for SHA-256 89fa250baabb844d…

MALICIOUS

PDF

110.1 KB Created: 2021-03-19 23:15:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 247a6890d38268d5c0f2be8b2c06c543 SHA-1: d78882710fed46cbc6f1ba38f7c035d926d8b236 SHA-256: 89fa250baabb844d2ae26501b0f6a8190e0429df329db5211b75b8ee3e9df74e
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are hosted on disposable domains, suggesting a link farm designed to redirect users. The primary URL, 'https://lozipotod.ru/award?keyword=durga+saptashati+path+vidhi+in+marathi+pdf+download', is presented as a search result, likely to trick users into clicking through to malicious content. ClamAV and ML classifiers also flagged this PDF as malicious, indicating a high likelihood of phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/award?keyword=durga+saptashati+path+vidhi+in+marathi+pdf+download PDF link annotation
    • https://cdn.sqhk.co/dunokufimove/wkgjlje/wulewijopujafikomu.pdfIn PDF document text
    • https://cdn.sqhk.co/guwewaxa/jeVV3je/steam_full_chat_history.pdfIn PDF document text
    • https://cdn.sqhk.co/gabadifofibo/Iie3htc/dare_you_to_love.pdfIn PDF document text
    • http://tapodozinojet.mypressonline.com/rig_veda_download_gujarati.pdfIn PDF document text
    • http://pibarulajido.getenjoyment.net/cosco_scenera_next_convertible_car_seat_safety_rating.pdfIn PDF document text
    • https://vafukomoruf.weebly.com/uploads/1/3/4/8/134862603/feravopovu-dawugisawor-jopoxaf-dukelaxijezogi.pdfIn PDF document text
    • https://fugomunufu.weebly.com/uploads/1/3/4/5/134586131/c0d4227fd31.pdfIn PDF document text
    • http://warajuvevuv.medianewsonline.com/how_to_be_even_better_manager.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/338ae59e-0483-4def-87b3-7abc4aa56062/the_story_and_its_writer_10th_edition_barnes_and_noble.pdfIn PDF document text
    • https://3cd6846c-369c-4875-9c63-132df726a2dd.filesusr.com/ugd/7ab50f_57b09fe71ce84689a2ca97ded5ac134a.pdf?index=trueIn PDF document text
    • http://kojenixerog.myartsonline.com/jump_rope_songs_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/393cb3a4-ade3-4baa-b976-6191d8d6771e/how_to_graph_polynomial_functions_on_graphing_calculator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e75e1af-3834-4dc5-aa9a-064b5cfb3e84/where_does_the_rainbow_start_and_end.pdfIn PDF document text
    • http://luvabokinoleg.onlinewebshop.net/46422882625.pdfIn PDF document text
    • https://1cf095b7-1d29-4152-b82c-7733cf7ba0c7.filesusr.com/ugd/c1de29_e65922e94402476da2700deb020414cf.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc8f564f-5d45-4e55-a7f8-c4fb91832f77/is_2021_a_good_year_for_libra.pdfIn PDF document text
    • https://034618a9-9b39-4f41-ad18-95bca1d1c80b.filesusr.com/ugd/48d9a1_ce534d0860da424dae8f198528b40c51.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8178be72-f524-4712-a31d-81bb70cdd0f0/bakizovoju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b108c82e-aa67-4aa8-aa6e-dea8aa2c9a7e/2892261514.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_off00015c8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C8B 5608 bytes
SHA-256: 39c6aafd8a174bc602777e535c41fb011f69eecc86be5c23bc41da791dd6d57a
font_01_sfnt_off00016f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F92 20776 bytes
SHA-256: 0b140dc51e3635cfdba9aa5adb2344d2ee47a71ad1d242ab2d530fd42cd88597