Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eb7a004b2d1ea67…

MALICIOUS

PDF

81.3 KB Created: 2021-03-07 05:36:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: eb603558d22be3977310d337b2651a01 SHA-1: 1d00db7c0d2e21ba84fa3cd884756c43f3611b79 SHA-256: 1eb7a004b2d1ea679cb673ce6258704ff7d73dd83acdf307803a260838b14b46
194 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many pointing to disposable domains, suggesting a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded URLs and the document's structure point towards an attempt to trick users into downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://jottigo.ru/wix?keyword=warning+letter+for+unsatisfactory+sales+performance PDF link annotation
    • https://cdn.sqhk.co/papusabefo/gfXiblR/mebejuvewunasi.pdfIn PDF document text
    • https://cdn.sqhk.co/kutajanode/MFghqJW/create_word_search_games_online_free.pdfIn PDF document text
    • http://sosamoguxoba.22web.org/what_is_the_law_of_equity_and_trusts.pdfIn PDF document text
    • http://jewivodapujoje.iblogger.org/husqvarna_viking_118_price.pdfIn PDF document text
    • https://cdn.sqhk.co/jedugifaxido/fFTibgj/9814570393.pdfIn PDF document text
    • https://cdn.sqhk.co/sipebililofo/RCgfgd0/final_fantasy_2_snes_underworld_map.pdfIn PDF document text
    • https://cdn.sqhk.co/gofuzurafano/O1higAa/domino_s_meal_deals_menu.pdfIn PDF document text
    • http://boxoxele.22web.org/10345678305.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://jawikaginixuxuz.rf.gd/4562882579.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5f92507-084f-436e-87c9-20ad660b3911/fosugetaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e637d0e-5466-4d28-8660-03d3f39f196f/dream_meaning_of_dead_siblings.pdfIn PDF document text
    • https://4c5ad993-366d-4b3a-aa99-9b6f56583180.filesusr.com/ugd/01e791_6459db63c2ab4937a0636f214cf1b982.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6feb826a-6b48-4d71-9a81-be6278594c8c/the_canterville_ghost_1986_trailer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0432e343-9bc5-4edd-8d84-1e41ac0247bc/37387897031.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e676e441-5ef5-4d5e-8dab-f90f4524a3f8/how_to_write_an_email_with_a_quote_attached.pdfIn PDF document text
    • https://cfecb619-c0f5-418d-ae9d-b1147643389f.filesusr.com/ugd/4cd51e_97156047295a47a58b2c559f186e2c17.pdf?index=trueIn PDF document text
    • http://nomapalugaji.epizy.com/95832470201.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd050883-5400-4d08-a7e2-0fdf606d0499/90602120489.pdfIn PDF document text
    • http://repefewuvu.epizy.com/pousada_cachoeira_do_formiga.pdfIn PDF document text
    • http://bubizimus.epizy.com/wezoxumiruzeke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67cee1ce-c944-43cd-8c2b-363932fefc54/47037692389.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a72fcf3f-d33c-4acc-807c-3eca020d380b/vujopiwagiwotugisesobiviv.pdfIn PDF document text
    • https://592908bf-dd96-48cc-88d9-ffebbdd10d84.filesusr.com/ugd/f34823_8dd0c39bd081440e86440ee09e5270c1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cb8a7b7-7844-4c91-bcf3-436cf1245ae2/power_pressure_cooker_xl_instrukcja_obsugi_po_polsku.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF162 5332 bytes
SHA-256: 05554120db6fe47ce7afda702f093346ce6dec31b72dfe7c90d1cc776a2547f3
font_01_sfnt_off00010382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10382 10896 bytes
SHA-256: 36aecd5083fb8b2240a76aa3c977c97dcb5e628a605ba5895c656a327eb57084
font_02_sfnt_off00012880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12880 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34