Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2e07bca57dfa75d…

MALICIOUS

PDF

83.7 KB Created: 2021-05-10 22:06:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 3f601809a051f4b33c5f9943ea18916d SHA-1: 41e684e79f8bd8e16848e59fdb7deca62a027075 SHA-256: b2e07bca57dfa75d97ec1e6d1a9f4124333ea46b52331bc0d8da21284b39a4b6
134 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'Genie intellig 1000 stopped working', likely intended to trick the user into clicking a malicious link. Several URLs extracted from the document point to disposable hosting and are associated with link farms, suggesting a phishing or malware distribution campaign. The ClamAV detection and ML classifier further support the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://pelibifir.ru/strik?utm_term=genie+intellig+1000+stopped+working PDF link annotation
    • http://pinenud.mygamesonline.org/46477989755.pdfIn PDF document text
    • http://civiliscmq.online/pagudagusawafaronopopewxfi7o.pdfIn PDF document text
    • http://tehnotop.space/wuvoresusalezapadoj88z.pdfIn PDF document text
    • http://myshoes.moscow/83041966132u1p22.pdfIn PDF document text
    • http://medgaj.com/fe_mechanical_exam_passing_scorelcbn3.pdfIn PDF document text
    • http://normal-id.com/the_four_fundamental_concepts_of_psychoanalysisjcz6k.pdfIn PDF document text
    • https://petodudugagakot.weebly.com/uploads/1/3/4/6/134640630/491e98b3586.pdfIn PDF document text
    • https://moviwinexanasi.weebly.com/uploads/1/3/4/3/134314602/30230750a5fbc3.pdfIn PDF document text
    • http://lazujifoxupa.getenjoyment.net/75060234826.pdfIn PDF document text
    • http://worldworkbook.com/12_rules_for_radicalskmt1h.pdfIn PDF document text
    • http://aazzzry.space/dungeons_and_dragons_handbook_5ez375x.pdfIn PDF document text
    • https://xoraxabaxid.weebly.com/uploads/1/3/2/6/132682630/4957507.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/76139815-2010-4515-aa2d-7989b19b5074/realidades_2_capitulo_2b_actividad_5_audio_answers.pdfIn PDF document text
    • https://aabf49e0-5477-4fd2-8456-a986ef8f2a87.filesusr.com/ugd/9e14ca_4c56a6bde242446998df7d015091261c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a075f020-cde8-4b1d-b6b9-be5942b55bf3/campark_trail_camera-wifi_20mp_1296p_upgrade.pdfIn PDF document text
    • https://0502d5d0-a0f5-47b8-bc1c-644c46e4e431.filesusr.com/ugd/6cabbb_269336c5d6534677bfcb044e784ac812.pdf?index=trueIn 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_off000106de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106DE 5300 bytes
SHA-256: fbf48029f96ead9d08fc160afd1dc8c16b75a627e1d0915082491449bf1ec1dd
font_01_sfnt_off00011915.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11915 11672 bytes
SHA-256: 64735188c662dab4110250009a27e9258fd8cb152403b326f60011de0bfdcc08

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