Malicious PDF — malware analysis report

Static analysis result for SHA-256 accbf05f226a4410…

MALICIOUS

PDF

66.6 KB Created: 2021-02-25 06:58:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a53a6a4f136d1395f42d98c0bbdcb481 SHA-1: fad2b96d78c85aa3d4d403d0fa3d79b23fc7218e SHA-256: accbf05f226a441038318f66c99ac61a7e207181355bbb5cbbb9a184ede0d620
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://baarspo.ru/wix?keyword=lakeland+272+employment PDF link annotation
    • https://cdn.sqhk.co/novujarogoga/geigkbO/fit_the_fat_2_100_muscle_100_skinny.pdfIn PDF document text
    • https://cdn.sqhk.co/keridola/fE8r7xQ/v_live_dallas_owner.pdfIn PDF document text
    • https://cdn.sqhk.co/pasivuzuke/WdheUia/snowball_fight_io_game.pdfIn PDF document text
    • https://cdn.sqhk.co/kosifodalab/Ug2aQia/63397330311.pdfIn PDF document text
    • https://fizabogozof.weebly.com/uploads/1/3/2/8/132815807/9ffdf2.pdfIn PDF document text
    • https://cdn.sqhk.co/lebapivi/dE4s8vC/xadufinidirotulikukorul.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/5Wbwqyh/rutigefofaw.pdfIn PDF document text
    • https://cdn.sqhk.co/girolivudafo/jbjhjiI/95541833113.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381294/normal_5fc809a01a7e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482402/normal_601f780e75ed1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422382/normal_600fc16b66bfd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451350/normal_5fc7cc20c0dc1.pdfIn PDF document text
    • https://cdn.sqhk.co/pimabosi/idggjig/road_crosser_bike.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/kubafezin/aidl_file_in_android.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/pejamawanara.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/55492431973.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_off0000c835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC835 5148 bytes
SHA-256: 57ba68902cb44b1e1599c5bf58c80f019da2dcefb8bcec969335badd6b17074d
font_01_sfnt_off0000d9c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C1 10588 bytes
SHA-256: a033d2eed712a5966e802b4acef529a6d2183a88be52f501792f1bb49929e110