Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9d5edb3fa50d1e1…

MALICIOUS

PDF

74.6 KB Created: 2021-02-04 01:00:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b7ec12766f3d6e90cfd68e6b0714b48b SHA-1: 8146973998d79a0c06f45582f4f99632077a54cc SHA-256: f9d5edb3fa50d1e1a20538ea701bd0ff7b1ecb3b870672befb45bc403e12a905
262 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://crophysi.ru/wb?keyword=scrivener%20templates%20fantasy In PDF document text
    • https://feronokemafa.weebly.com/uploads/1/3/1/1/131164109/bumigujoleman-tobowuneximirit-tofisazizax-vosilade.pdfIn PDF document text
    • https://roxobirunuj.weebly.com/uploads/1/3/4/0/134096027/6809742.pdfIn PDF document text
    • https://cdn.sqhk.co/xetorexevapi/jdBhjSN/riguxegevamanujajapasota.pdfIn PDF document text
    • https://cdn.sqhk.co/gozafavapawu/aEic0jY/drive_ahead_hack_ios_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/cROCicr/real_car_parking_2_game_download.pdfIn PDF document text
    • https://pudasebedizut.weebly.com/uploads/1/3/4/5/134587980/7351518.pdfIn PDF document text
    • https://wolaserirefuf.weebly.com/uploads/1/3/1/6/131637046/fulumukitewulo_kazopa_fosim.pdfIn PDF document text
    • https://cdn.sqhk.co/wugolekufo/hdohhDt/jedadobeguxomibe.pdfIn PDF document text
    • https://pigudoxuwupif.weebly.com/uploads/1/3/1/4/131437670/vetot-fiviwisuxamogi-dufasaza.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/nowokil/consumer_reports_new_cars_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/video_ad_maker_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/54376425512.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/90667815251.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/bare_tail_pro_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/adobe_illustrator_font.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_off0000e844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE844 5428 bytes
SHA-256: 70e09af6848700a3011316e2401f4365037acecc73d9bada94564a0d575a2461
font_01_sfnt_off0000fab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB0 10216 bytes
SHA-256: d3fe57fb7ca13f677711deb4f99953f8ee5ab70e13b99a5b067ce8f7919e3944

Open this report in the interactive analyzer, or submit your own file for analysis.