Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bae42213df59477…

MALICIOUS

PDF

79.4 KB Created: 2021-03-10 04:02:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 5a72db98a08edc9bfc2434c9e5a46603 SHA-1: 11c769182c27e93546c664187a6e0509a07b311b SHA-256: 8bae42213df59477befa1f54db605b668c4d9b2dd5726ef34e37accee5d69f81
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xezojetit.ru/wix?keyword=gathering+levelling+guide+ff14 PDF link annotation
    • https://cdn.sqhk.co/gorokipo/jcWnibK/49703062139.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446915/normal_60076937a7f22.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484610/normal_5ff9495e3387e.pdfIn PDF document text
    • http://wegutamozeji.iblogger.org/46126238936.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412160/normal_603c50a194080.pdfIn PDF document text
    • https://cdn.sqhk.co/seranowe/Dal5ieI/yellow_plastic_shopping_bags_bulk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473926/normal_5fe81d10a82fb.pdfIn PDF document text
    • https://cdn.sqhk.co/vozeseseber/jcGicOd/63750514317.pdfIn PDF document text
    • https://cdn.sqhk.co/suzagofi/jeDhfQv/25723841930.pdfIn PDF document text
    • https://cdn.sqhk.co/revowemerem/iiiaNgf/wopowazefes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416932/normal_5fe39dbc068b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401517/normal_6028709c4b341.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366034/normal_6021bced2b8ee.pdfIn PDF document text
    • http://raxuzogigegekaj.66ghz.com/73643536548.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446272/normal_601ef92acbd48.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://56db2a4d-09ce-4ff6-a558-abb1d6727cd4.filesusr.com/ugd/003b86_9fba551405a14075af0c420946ea2b80.pdf?index=trueIn PDF document text
    • https://0491f86b-060d-4f4a-be23-b0d01488777f.filesusr.com/ugd/faa7ef_69816e31b1b14c8580d3225ceb276eb4.pdf?index=trueIn PDF document text
    • https://828c6a01-da61-4814-986a-f72e64f4f334.filesusr.com/ugd/cdfdba_0544ea97ac7a43f888618875169014b5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/22522129611.pdfIn PDF document text
    • https://1fd079ea-3156-4ae8-a0b4-6153e0b529c5.filesusr.com/ugd/e66bf7_22ed0c5a14c94509bf5548761c628752.pdf?index=trueIn PDF document text
    • https://0b609444-e5a2-4a7e-9779-a3c6bae51a53.filesusr.com/ugd/529dbf_ab94c34343674b3b967f152fa9f475c4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lawakux/episode_guide_grey_s_anatomy_season_16.pdfIn PDF document text
    • http://mujasanowagug.epizy.com/2014_mazda_3_gt_owners_manual.pdfIn PDF document text
    • http://junipom.rf.gd/how_do_you_reset_rca_voyager_3.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_off0000f9ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9AB 5224 bytes
SHA-256: 1e7cc0743ce8351a2dc242adbf1092c596d5e1e18b5fe59b91f81afef99733ee
font_01_sfnt_off00010b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B7F 10556 bytes
SHA-256: 6b2a7ee93363e470589d4b3409e883c330c088e8be94d0c538a4eaf55fddd0f6

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