Malicious PDF — malware analysis report

Static analysis result for SHA-256 619edbc688175f34…

MALICIOUS

PDF

50.9 KB Created: 2020-10-29 21:19:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 1b705e52c777e8129a9e722f06d11d6f SHA-1: d43373ed1101885fb5211d026c5b056ed6daddde SHA-256: 619edbc688175f3464fb753d270db3b218ca6c7635f0227e54c5f7b556a79748
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/aws?keyword=john+wick+3+watch+online In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f86fef687dde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377924/normal_5f9401c5222a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370285/normal_5f888eb25f8d4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/6677/5456/files/schedule_c_2020_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6259/8067/files/dd_5e_polearm_master_feat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9946/3073/files/value_proposition_design_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/viva_la_musica_andres_caicedo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/350a11ef-8688-4107-acc5-f9938afba539/69333952787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5197/4818/files/lemexajevozap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/772229be-35df-4622-89c7-4eea07a69ab5/76487472037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8177/5287/files/traffic_rider_mod_apk_latest_version_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4456/8989/files/vebufibet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/7593/5666/files/32930613033.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/rawoxonon.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/naxupaj.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_off00008806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8806 4920 bytes
SHA-256: 51df3ad95d285692c05b762eaf98f27dc77ec607e52405a2299a986c16137ba7
font_01_sfnt_off000098d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98D6 11136 bytes
SHA-256: 1f7845df60cbf8817fe057fe5d52d9507cbb3c4aa96847031881983795244ccf