Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e1da108b20dac82…

MALICIOUS

PDF

73.8 KB Created: 2021-01-27 11:53:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b35ce80d205f088f4a5e788672ff06d4 SHA-1: 69d510ded86bb8d551054f4f3231ef751a0a1917 SHA-256: 7e1da108b20dac8230f6b185457336c0f37832902d96d0070b5ac1caa89c3c4d
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://bologen.ru/aws?utm_term=mammogram+guidelines+for+over+65 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4454429/normal_5fcef54a731d4.pdfIn PDF document text
    • https://buparemekixa.weebly.com/uploads/1/3/0/7/130739227/gitazib-sedejut-kevegesiwepunen-zonive.pdfIn PDF document text
    • https://sonujeti.weebly.com/uploads/1/3/0/9/130969686/8862e00e.pdfIn PDF document text
    • http://verifiedbadges-form.com/xopupedidogipogimatodie3ner.pdfIn PDF document text
    • https://lumovomudin.weebly.com/uploads/1/3/4/7/134704265/meluzo.pdfIn PDF document text
    • http://probkin34.xyz/vorumurun69d0i.pdfIn PDF document text
    • http://autobaff.xyz/panixifipa7nk5u.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381094/normal_5fcd1cb1bd718.pdfIn PDF document text
    • http://all-casino.xyz/rc_driving_gamesduzxd.pdfIn PDF document text
    • https://fowezojufogomod.weebly.com/uploads/1/3/5/3/135307270/2947913.pdfIn PDF document text
    • https://vonepegoparopew.weebly.com/uploads/1/3/4/3/134352316/3860991.pdfIn PDF document text
    • https://dakubotamijez.weebly.com/uploads/1/3/2/7/132712147/likegakovusu.pdfIn PDF document text
    • https://fajizaxaro.weebly.com/uploads/1/3/1/3/131381717/bagobot_guxopup_bomaxo.pdfIn PDF document text
    • https://lutaxebibutemun.weebly.com/uploads/1/3/1/3/131380730/087a2300.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/cool_butterfly_wallpapers_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/mapege.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/josemizotizuxobobizivago.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/kidney_cancer_canada_guidelines.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_off0000e499.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE499 5568 bytes
SHA-256: 9072cced74e533b9d3a1f7df2be292049d8d2ae34086971ddc2bc806946f78ab
font_01_sfnt_off0000f78d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF78D 10136 bytes
SHA-256: 65aaca1c5beb62fb1babc5b047fa67da3d53b11d4c94a46e0339cefe5e6f3105

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