Malicious PDF — malware analysis report

Static analysis result for SHA-256 0057cff0255b11e9…

MALICIOUS

PDF

75.3 KB Created: 2021-03-13 15:38:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9555a4fb0a0224a705cab81ac430936 SHA-1: 374e99b19e925b3556014f6d07c84a71584b470f SHA-256: 0057cff0255b11e9d937c675e35026aa247fabb61c7bf9ea80552fe64565a253
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm. The ClamAV detection and ML classifier strongly indicate maliciousness, specifically a phishing or trojan distribution attempt. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to redirect users to malicious sites like 'lozipotod.ru' or 'gowutejuvotebap.weebly.com' for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 5

  • 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=camille+vs+riven+drututt
    • https://gowutejuvotebap.weebly.com/uploads/1/3/4/3/134372770/ronajo-netapovezokoseg-kafavaruwizid.pdf
    • https://cdn.sqhk.co/zimuteraf/jgcPhfc/maate_baby_care_kit_price.pdf
    • https://cdn.sqhk.co/fogunedevare/haCH6ji/build_a_chatbot_python.pdf
    • https://zalirojojates.weebly.com/uploads/1/3/4/6/134606979/mezuvefidolinanaxu.pdf
    • http://nemurirewokow.iblogger.org/76498660114.pdf
    • https://cdn.sqhk.co/kewawukufiju/hjC4ghu/33123977019.pdf
    • https://cdn.sqhk.co/kasesiseb/xuDhhM8/zuzasekatexezifikuja.pdf
    • https://xonatusapu.weebly.com/uploads/1/3/5/3/135391421/tatifapu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://f85e9a30-dbb9-40fd-a66d-53bd7daafe07.filesusr.com/ugd/1b9faa_f3cf9637dc904ded8613d5d8113d69f7.pdf?index=true
    • https://s3.amazonaws.com/muxozuvalubi/voyage_charter_party_standard_form.pdf
    • https://s3.amazonaws.com/sorogamat/xokikoxawaziliwiwilanugek.pdf
    • https://s3.amazonaws.com/fadadedezeker/trials_of_apollo_book_5_online_free.pdf
    • https://s3.amazonaws.com/fomaralunex/keyword_research_report_template.pdf
    • https://34fef40c-4934-4c56-b24d-59915ed92566.filesusr.com/ugd/806295_3c7f7486bfb44366bb14359754a7ea8d.pdf?index=true
    • https://s3.amazonaws.com/kewakuko/33725641776.pdf
    • https://s3.amazonaws.com/vavale/tawewovefirijuw.pdf
    • https://s3.amazonaws.com/wuxupewu/87047246294.pdf
    • https://s3.amazonaws.com/pesetufavo/credit_reference_request_template_word.pdf
    • https://ebc1add8-0b9d-418e-9e4a-1e287827e933.filesusr.com/ugd/ab63e3_e819c90fa70b48898f299bf5429dbc21.pdf?index=true
    • https://s3.amazonaws.com/wukara/daguzokubomiv.pdf
    • http://gemosufijubimup.epizy.com/crime_patrol_2019_hd_mp4.pdf
    • http://sojusubelifaf.epizy.com/boximedarasa.pdf
    • http://wolaniloko.epizy.com/lol_heimerdinger_aram_guide.pdf
    • http://rozopujonabesix.epizy.com/83278767574.pdf
    • https://58eafb2e-ea74-4523-a1b2-d2e0fe9bfe54.filesusr.com/ugd/466fa0_e7518569a5b14d7cb1fca3c16013f7f3.pdf?index=true
    • https://d3826037-6016-486c-99e9-dc41bc666644.filesusr.com/ugd/b81754_b2bd38d940d94b68afd2cf0a1fe9b28e.pdf?index=true
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd44.bin
69b7dee306ba6ba6eeee0d24a510d0008721127c3afea22180b52d05441a3b29		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD44 4824 bytes
font_01_sfnt_off0000ed8c.bin
a5656e18e74129a0e4587d194be8f8abe6003a12af98d3ac8bb3fff58ff4047d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED8C 10564 bytes
font_02_sfnt_off00011188.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11188 4324 bytes

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