Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa05fd497b092e8b…

MALICIOUS

PDF

72.1 KB Created: 2021-02-26 12:55:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: b090b0ed312873d1e2213de2011e1c02 SHA-1: 8b4dfed394048dda694fed5ebd6a8233549520a4 SHA-256: fa05fd497b092e8b93ca828bcd809648fa92108e4ac5838abc059d7a43721bfa
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a primary one pointing to 'mezovuduw.ru', suggesting a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for such lures. Although no scripts were explicitly extracted, the presence of external URIs and the ML classifier's high confidence score strongly suggest malicious intent, likely related to phishing or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/wix?keyword=ski+safari+hacked+unblocked PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4444856/normal_5ff3b74b36c06.pdfIn PDF document text
    • http://lnstagaram-verifiedbadges-from.com/sheet_street_baby_towelshtee0.pdfIn PDF document text
    • https://cdn.sqhk.co/puzadowoke/ididjhg/37125231546.pdfIn PDF document text
    • https://cdn.sqhk.co/nozujeraguje/Ihdthi6/45297343187.pdfIn PDF document text
    • http://interplast.ru/17770673047r3l1g.pdfIn PDF document text
    • https://cdn.sqhk.co/susojitigi/Njfc77G/noodle_master_machine.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405654/normal_5fd153ef03cd2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387704/normal_5fdd8d6946e98.pdfIn PDF document text
    • https://cdn.sqhk.co/sixepatexup/jdhbGC2/el_cajon_townsmen_gang.pdfIn PDF document text
    • http://wiwuwanulujero.iblogger.org/91794574971.pdfIn PDF document text
    • http://kakaxazirobolob.iblogger.org/chrome_version_72.pdfIn PDF document text
    • http://lapitubemexidi.mywebcommunity.org/how_to_make_money_as_a_programmer_in_college.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381738/normal_60192c4865f11.pdfIn PDF document text
    • http://findfreegirl.com/autocad_3d_basic_exercisesuiqmm.pdfIn PDF document text
    • https://cdn.sqhk.co/gobavata/hjO0AbB/pumajigamupatinuzi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://manepiri.epizy.com/british_columbia_road_map_and_parks_guide.pdfIn PDF document text
    • http://nejimafalun.onlinewebshop.net/when_should_i_receive_my_ssa_1099_for_2020.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_off0000def1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF1 5416 bytes
SHA-256: 0927d718c0fd459b66a119d19a2ecb8421927ee65442ea62086c09644e9492d0
font_01_sfnt_off0000f158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF158 9968 bytes
SHA-256: 757ba2f4affab47abd635ef84db89c9dba52eb51a786e7d982913616031000ad

Open this report in the interactive analyzer, or submit your own file for analysis.