Malicious PDF — malware analysis report

Static analysis result for SHA-256 62229b3f71feeaa2…

MALICIOUS

PDF

64.3 KB Created: 2021-02-19 12:46:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 86958db51befb7cb80c731527512630f SHA-1: edb123efcc5428e39eee588d5d9a648c1a03dbf5 SHA-256: 62229b3f71feeaa2bef0f0d0e575f7a0b66f324900d500c7413f93a7dc73168b
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wb?keyword=taurus%20g2c%209mm%20magazine%20speed%20loader PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481403/normal_60200507b60e0.pdfIn PDF document text
    • https://dixozetazexode.weebly.com/uploads/1/3/4/4/134472526/tigorini.pdfIn PDF document text
    • https://molawaxurot.weebly.com/uploads/1/3/4/6/134699933/rojusebala-patepe-rawasusinorul.pdfIn PDF document text
    • https://tizojutatow.weebly.com/uploads/1/3/1/4/131406606/tewozizo-lagogo-xajojelepaw-jenogokiretasol.pdfIn PDF document text
    • http://profyhouse.ru/effluent_regulatory_reporting_information_systemu8szz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420029/normal_5fe052656d9cd.pdfIn PDF document text
    • http://stebsmeh.space/jusibusizowujobeberuufhl4.pdfIn PDF document text
    • https://rimedugomo.weebly.com/uploads/1/3/0/7/130740195/wofurituni_sunosaw_mexokeluwi_zamezi.pdfIn PDF document text
    • https://riwusivi.weebly.com/uploads/1/3/4/9/134900433/8120523.pdfIn PDF document text
    • https://reragoposezexel.weebly.com/uploads/1/3/5/9/135958934/15075.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/vetamedisoz/skin_lesion_excision_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/83099036029.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/best_interview_answers_to_tough_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/pamojixajurubamanowikafe.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/radgrid_grouping_template_column.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_off0000bcc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCC3 5680 bytes
SHA-256: 1f1ef30628d3d1030f4097231e4c7327b56dde82861758cbc740a29e9bcd7539
font_01_sfnt_off0000d003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD003 10696 bytes
SHA-256: 82fac95f8f5201a7fc74c583afbd4eb673aa88e4b183cb05ded3090ac0298f02