Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6fdfe6b0d502192…

MALICIOUS

PDF

74.5 KB Created: 2021-02-27 15:11:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: c3fd0ba60b5bb74040cc4c2067b72e26 SHA-1: 4d1a04b792411c8b52b728f97a6c424bdb54e1a1 SHA-256: a6fdfe6b0d50219236993b3382b3afee7c317cf0c4e36e30f443da5c5b28a7f5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/wix?keyword=how+to+make+tea+out+of+soursop+leaves PDF link annotation
    • https://sinevojixataxer.weebly.com/uploads/1/3/4/1/134131740/zusekazemazo-farelinowufunik-xomelik-xonepedajilal.pdfIn PDF document text
    • https://pojojozujivalim.weebly.com/uploads/1/3/1/1/131164399/8380791.pdfIn PDF document text
    • http://saxobupazes.sportsontheweb.net/64642213853.pdfIn PDF document text
    • https://jinuwipalo.weebly.com/uploads/1/3/5/3/135332432/3427144.pdfIn PDF document text
    • http://dewisazovuvoxi.mywebcommunity.org/wemokujazujiwelogopas.pdfIn PDF document text
    • https://kuweperiti.weebly.com/uploads/1/3/4/9/134904821/9658820.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/dakex.pdfIn PDF document text
    • http://vitofemegawe.getenjoyment.net/lomixuvelogutomukodowaxug.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/interior_designer_opportunities_in_dubai.pdfIn PDF document text
    • https://wexewuvaxodewo.weebly.com/uploads/1/3/1/4/131407465/b7cb3918.pdfIn PDF document text
    • http://dimozakebaba.scienceontheweb.net/10179651350.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuvuvadut.onlinewebshop.net/how_much_is_2015_toyota_camry_in_nigeria.pdfIn PDF document text
    • http://tofujuwo.onlinewebshop.net/pwm_solar_charge_controller_schematic.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/free_graduation_cap_template_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/76580793376.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_off0000e752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE752 5224 bytes
SHA-256: 93a5941e338295b1dcf1305551088b6e64e8bf8619092a2a8e8389f8bfaf4b8a
font_01_sfnt_off0000f919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF919 10476 bytes
SHA-256: 600c42c5148db8558ad143fa29872d7413aa37aa4f48d76ba3572f3dbd685bcb