Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d671c7d3091146d…

MALICIOUS

PDF

80.9 KB Created: 2021-03-01 14:45:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e553e47219ee4258596214a606c3cbe2 SHA-1: a9c1abbfeab27170e0eb297f16da4c0e3de2db2c SHA-256: 0d671c7d3091146d547022107a532b120fd6dfc91665fb07bc9c1c9efd3e1223
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs and is identified as a link farm hosted on disposable domains, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the nature of the heuristics point towards an attempt to redirect users to malicious content.

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://ponafet.ru/wix?keyword=seven+prayers+god+always+answers PDF link annotation
    • http://xariketixagat.mypressonline.com/fukugugexufokusunixeka.pdfIn PDF document text
    • http://ingmijn.com/thumb_fighter_unblocked43p3w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366947/normal_6017d08896c73.pdfIn PDF document text
    • http://mmuuue.space/craftsman_10_inch_band_saw_user_manual3swx8.pdfIn PDF document text
    • https://zukutalemuz.weebly.com/uploads/1/3/4/5/134582669/gemezir.pdfIn PDF document text
    • http://bikelumonekodex.mygamesonline.org/72203306401.pdfIn PDF document text
    • http://paxebuli.iblogger.org/tavesegogojisu.pdfIn PDF document text
    • http://alania365.ru/dobuwogaopq.pdfIn PDF document text
    • http://opticsystem.website/livestock_farming_system4ng3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460944/normal_6014f7dfe5447.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/dubofamumedovomoj.pdfIn PDF document text
    • http://nexojofe.22web.org/nodawiguxove.pdfIn PDF document text
    • http://conicppjry.bid/tidusupatilaghn0z.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/senilopomu.pdfIn PDF document text
    • http://menbp.online/6130670641g2bcy.pdfIn PDF document text
    • http://idslim-italia.site/20140595958q48c6.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://foboganezebalo.rf.gd/sad_alone_picture.pdfIn PDF document text
    • http://jagutebi.epizy.com/english_grammar_test_intermediate.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_off0000f264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF264 5144 bytes
SHA-256: fa06f4165e15a1efb8049f4619496b87e09adb5e6d85f9f927a932111637ecb9
font_01_sfnt_off000103f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103F3 10656 bytes
SHA-256: 5651060860e71783bbf44745dbb7f609256ad83a635c03aa8f541375551bd8f8
font_02_sfnt_off00012841.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12841 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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