Malicious PDF — malware analysis report

Static analysis result for SHA-256 425eee0efe8f87dd…

MALICIOUS

PDF

73.2 KB Created: 2021-02-25 04:20:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b552e484f9caee9174e575aa301eb824 SHA-1: 7241e8a71f3fdfeed07aa3ac7b64708da6cd9af4 SHA-256: 425eee0efe8f87ddb452d3afbca8e291adcd28f53f9c1b5f598ed811d4b99dc3
186 Risk Score

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 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.
  • 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://jacksth.ru/award?keyword=how+to+write+a+suspense+story+ks2 PDF link annotation
    • http://dithetsen.xyz/buvowewj251.pdfIn PDF document text
    • http://tameenegypt.com/alien_artwork_giger6shhn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388613/normal_5ffb454535c66.pdfIn PDF document text
    • https://vipukawolatu.weebly.com/uploads/1/3/4/4/134486161/5064216.pdfIn PDF document text
    • https://mupexopuwes.weebly.com/uploads/1/3/4/7/134722910/sivigu.pdfIn PDF document text
    • http://medicalpracticementor.com/wiring_simplified_by_h.p._richter48s25.pdfIn PDF document text
    • http://cyberghost.store/carl_rogers_unconditional_positive_regard7gyg7.pdfIn PDF document text
    • https://muvipedoboxeju.weebly.com/uploads/1/3/1/1/131163867/rimazin_palekuberop_kabiputigifu_fidule.pdfIn PDF document text
    • https://burekanokem.weebly.com/uploads/1/3/1/0/131069897/0678db4f.pdfIn PDF document text
    • http://bilet-pdd.site/60491607010rgiim.pdfIn PDF document text
    • https://nubipudovolena.weebly.com/uploads/1/3/4/0/134012318/pogokakorusepuxodip.pdfIn PDF document text
    • http://igcopyrightforhelps.com/learn_java_programming_in_urduplpo1.pdfIn PDF document text
    • https://vexifodukegaze.weebly.com/uploads/1/3/5/9/135977609/3943830.pdfIn PDF document text
    • https://tobivuzulukimu.weebly.com/uploads/1/3/1/3/131384599/dac4bd672a0cc13.pdfIn PDF document text
    • http://huseyincanx.com/dimeluzusifumaxugukugasap97d4v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408582/normal_5fc647864a1c1.pdfIn PDF document text
    • https://kawifapexevudo.weebly.com/uploads/1/3/4/7/134711131/be49f6a.pdfIn PDF document text
    • http://form-lnstagramcopyrightservice.com/bafg_formblatt_3_wie_ausfllenj7rv6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e1a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A2 5132 bytes
SHA-256: 90304308063fdc34939b736380b6356ed85155327546ae26d736abde0219153b
font_01_sfnt_off0000f33e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33E 10520 bytes
SHA-256: 8b3a97b42d7af1c18d1469bf51d62188077ec0fe97cfd83941d8438991c2bbf2

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