Malicious PDF — malware analysis report

Static analysis result for SHA-256 0841509ee133b686…

MALICIOUS

PDF

53.0 KB Created: 2020-10-15 13:32:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3cb83d4557706ed7c190445adf9225c7 SHA-1: 9c5219a78271e373a5274f9889a77c44145d5ccf SHA-256: 0841509ee133b68666eaf2c1d6cf608cb55122141950aa3523a138f5097b630f
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://cctraff.ru/pify?keyword=gt+sport+car+tuning+guide In PDF document text
    • https://site-1043353.mozfiles.com/files/1043353/digif.pdfIn PDF document text
    • https://site-1038432.mozfiles.com/files/1038432/pogigisopebakefopefo.pdfIn PDF document text
    • https://site-1048535.mozfiles.com/files/1048535/honda_transalp_xl600v_motorcycle_service_manual_pdf.pdfIn PDF document text
    • https://site-1040135.mozfiles.com/files/1040135/88646987061.pdfIn PDF document text
    • https://site-1039161.mozfiles.com/files/1039161/69860963704.pdfIn PDF document text
    • https://site-1040571.mozfiles.com/files/1040571/lukurad.pdfIn PDF document text
    • https://site-1036833.mozfiles.com/files/1036833/22709437513.pdfIn PDF document text
    • https://site-1036925.mozfiles.com/files/1036925/82300002596.pdfIn PDF document text
    • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/wepuvumida.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/zakeme.pdfIn PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/c25f730.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/sefaritonos-nukivafeka-retisebop-regaxumex.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/1/0496/1471/7091/files/mecha_club_csuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7700/9060/files/is_gideon_from_criminal_minds_still_alive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3796/1635/files/87205573728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/6215/3382/files/mus_flavicolis_disease.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1040/0153/files/73079984766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2754/9338/files/mr._clean_magic_eraser_super_twist_mop_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/2937/3343/files/cmyk_colour_chart_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8361/5394/files/zapafekenoziwewajutisi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05a56d7c-83ae-4c14-880b-d0d1d0834b36/fowuberurepivamu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b34c40f3-d0af-4b63-9c92-3d167fe87120/74447061594.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b2b8e0f-4c1a-4b85-a12f-ace0bb729a79/kojajupiwevuxod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9ae74bc-37d5-4a78-b35b-8a4c09dbd743/tujizisesutifigegikufam.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_off000084ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84EA 5240 bytes
SHA-256: 0a2b77747607acc13735e029ddffd0f587527c05d58274febb0264b0d10abdd9
font_01_sfnt_off000096ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96CA 15344 bytes
SHA-256: eacead9fb66be0f2c2b4a732e2dffbfdce46bebeb516f0def22dca0d300220d1