Malicious PDF — malware analysis report

Static analysis result for SHA-256 545fbfa99577d0f1…

MALICIOUS

PDF

76.7 KB Created: 2021-06-11 10:49:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 329045c93a7dc9a5da5af7e5c9d668a3 SHA-1: d1197a75c9de25e14a4bad7f471b43ddef01089a SHA-256: 545fbfa99577d0f17a5225f86ea478d2bb56fc87fb8104a22cdd970db7d8518c
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, contains text related to 'Fatteshikast full movie online', which is likely a lure to direct users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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.
  • 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://crysiq.ru/pbw?utm_term=fatteshikast+full+movie+online
    • https://gunoserikufetof.weebly.com/uploads/1/3/4/3/134360264/wafogilijo.pdf
    • https://panulozeti.weebly.com/uploads/1/3/5/3/135351273/wixakajojodek_tivodov_xorixuxe.pdf
    • https://larebefol.weebly.com/uploads/1/3/4/6/134691273/dunetowugogasi_kuvoduladule_kibevifiwedalif_samaseto.pdf
    • https://xaniwunedevivat.weebly.com/uploads/1/3/4/4/134470123/kuvuzifar_repugumanija_lokewewaxo.pdf
    • https://suxugugufagiwa.weebly.com/uploads/1/3/4/7/134740592/c6f1a.pdf
    • https://nugibunexediga.weebly.com/uploads/1/3/0/7/130740514/fenejiv-tuwulupozujon-gimediko-nupexago.pdf
    • https://rojogibolodo.weebly.com/uploads/1/3/0/7/130775817/muxix.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dijakezepo.pbworks.com/w/file/fetch/144870777/56685492921.pdf
    • http://nudifimixonu.pbworks.com/w/file/fetch/144986748/income__expenditure_account_format_in_excel.pdf
    • http://xovakovawup.pbworks.com/w/file/fetch/144523326/how_to_measure_size_of_bullet.pdf
    • http://wijozuzapusa.pbworks.com/w/file/fetch/144439059/us_navy_advancement_results_july_2020.pdf
    • http://newubotadov.pbworks.com/w/file/fetch/144754086/xelupamipimatavani.pdf
    • https://uploads.strikinglycdn.com/files/34ab4a9c-a5f8-4e45-bfb5-386291d3ebf4/78151994424.pdf
    • https://uploads.strikinglycdn.com/files/a990f4ef-de23-4114-b686-8ef066efddd0/gijuvukoxu.pdf
    • http://tosuvop.pbworks.com/w/file/fetch/144475614/what_is_the_job_of_a_geotechnical_engineer.pdf
    • http://gijutexamuwa.pbworks.com/f/xowewusavobivisaxo.pdf
    • http://numefen.pbworks.com/w/file/fetch/144535101/realidades_2_capitulo_5b_answers_page_109.pdf
    • http://xulajirose.pbworks.com/w/file/fetch/144878523/ielts_double_question_essay_topics.pdf
    • https://uploads.strikinglycdn.com/files/39080cb2-cd54-4972-9a96-a4319c0f6dd6/46411443981.pdf
    • http://zufumegi.pbworks.com/w/file/fetch/144423579/dufetukakusej.pdf
    • http://sizolasipape.pbworks.com/f/sezejejazesuxenusuwulax.pdf
    • http://gepefupugalu.pbworks.com/f/vobezowonajuzivemisapob.pdf
    • https://uploads.strikinglycdn.com/files/1aac69b6-7939-49f9-b529-7cb2c7f47c4e/84339645074.pdf
    • https://uploads.strikinglycdn.com/files/34d30833-4d7d-4f77-8811-287737d5c731/verizon_g1100_router_price.pdf
    • http://jaxonewu.pbworks.com/f/7306944473.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f028.bin
6ad8bf47a8e57a83dd0a15e2f6a8edb11cd68d7eaf235447b30ac627df41b97d
pdf-font-stream PDF embedded font (sfnt) at offset 0xF028 4992 bytes
font_01_sfnt_off0001010a.bin
f73f9fe15e64993f3646e2491ab88c84cf7b0a4f42d93c5a97457eaf2878b05a
pdf-font-stream PDF embedded font (sfnt) at offset 0x1010A 10616 bytes