Malicious PDF — malware analysis report

Static analysis result for SHA-256 1960a4839653cb5a…

MALICIOUS

PDF

69.0 KB Created: 2021-03-07 19:09:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1fd27812b66f41851d1b32e0524ff8e0 SHA-1: 495e1f70f02dd709c62aed7220127a8801029375 SHA-256: 1960a4839653cb5ae97c6e87d3ed6b7de2d2aa09992052d76c1cf6a19403f341
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://baarspo.ru/award?keyword=advanced+excel+tutorial+pdf+2016 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4468831/normal_600e6a83a1b59.pdfIn PDF document text
    • https://xogofodaromaf.weebly.com/uploads/1/3/4/3/134387758/zavuwotakil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370989/normal_5fd0881619fb5.pdfIn PDF document text
    • http://mscredit.info/tc_electronic_flashback_triple_delay_manualeevn1.pdfIn PDF document text
    • http://hotsales-com.xyz/dijagoned279b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481417/normal_602ec4b26d7ee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498882/normal_5ff2003a0991f.pdfIn PDF document text
    • https://mesajenijapab.weebly.com/uploads/1/3/0/9/130969967/532507.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvotalek/VCtDY4V/funny_snapchat_voice_changer_videos.pdfIn PDF document text
    • http://ig-mediateam.net/zemobijidameremib9e8dh.pdfIn PDF document text
    • http://nashremont.site/33497044733sy4es.pdfIn PDF document text
    • https://jakugogafezokev.weebly.com/uploads/1/3/1/4/131437362/lavumiluzuxifolagav.pdfIn PDF document text
    • https://cdn.sqhk.co/xiladuxe/ifIhhWH/amtrak_roomette_discount.pdfIn PDF document text
    • https://cdn.sqhk.co/kolokejo/oLid0gf/cartoon_footsteps_sound_effect_free_download.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
    • https://e2604e0b-f95a-4acb-b53f-a7db3827b2a1.filesusr.com/ugd/225520_cc778a748d7a404ab2953734c69d226a.pdf?index=trueIn PDF document text
    • https://c78ffd2e-fc3d-4272-86ca-968d835fb7ad.filesusr.com/ugd/0f9ef0_c124a5d398244db891fa48adcfd26e43.pdf?index=trueIn PDF document text
    • https://e50eee24-2d95-422d-8083-6f618d95927b.filesusr.com/ugd/594ae5_c2984dfaf53f44d0a4fdde7301b8c24a.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3DD 5452 bytes
SHA-256: c6668839a1f195869c924d0366b4998ae125eafb673fa87925cc765459e3f20d
font_01_sfnt_off0000d67d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD67D 10160 bytes
SHA-256: 1debc3c34618c7b0a756e556d7f5dff7976f335a0c27b755e96c3e9fbbe92c22
font_02_sfnt_off0000f901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF901 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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