Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e6b24a40d45e3b8…

MALICIOUS

PDF

72.6 KB Created: 2021-06-09 05:21:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb9eabd88de0dea63b45de98e4146b01 SHA-1: d7acf2a3b3ee1cf5375842ca948c3e0623e8693d SHA-256: 9e6b24a40d45e3b8057f07ca199d9d6694f1843dc09ee5736acf086d653fc7a5
226 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to distribute malicious content. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document likely instructs the user to decrypt a password-protected archive, a common tactic to bypass security scans. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ketchas.ru/pbw?utm_term=wwe+file+for+ppsspp
    • https://static.s123-cdn-static.com/uploads/4369494/normal_5fc576b3c175c.pdf
    • https://cdn-cms.f-static.net/uploads/4454561/normal_606e6ccd6c614.pdf
    • https://botasapozav.weebly.com/uploads/1/3/1/6/131607984/loposawasakipeg-xepetilibisukig-nemabesaved.pdf
    • https://femomupine.weebly.com/uploads/1/3/4/4/134458898/3873133.pdf
    • https://wirafoxojobukof.weebly.com/uploads/1/3/4/6/134608935/nevamarirusav.pdf
    • https://sikefenuvip.weebly.com/uploads/1/3/4/0/134012601/kafaxurutupilaw_mubupusaranegot_latade.pdf
    • https://sazejibapox.weebly.com/uploads/1/3/4/8/134863873/lobusejifevorekap.pdf
    • https://koreperuk.weebly.com/uploads/1/3/2/6/132680900/vaxelov_kupikumasu.pdf
    • https://xegiduburap.weebly.com/uploads/1/3/5/2/135294675/5992971.pdf
    • https://static.s123-cdn-static.com/uploads/4484383/normal_5fdcded926a4b.pdf
    • https://kewesolatuveg.weebly.com/uploads/1/3/1/4/131452958/19af240417043.pdf
    • https://nalirukixew.weebly.com/uploads/1/3/0/9/130969663/zivunegilupuze.pdf
    • https://mamudige.weebly.com/uploads/1/3/0/8/130874639/purarimigat-kafironukixuri-xukoje-lapabakuzevope.pdf
    • https://static.s123-cdn-static.com/uploads/4377125/normal_5fe56d72d7f27.pdf
    • https://tunegize.weebly.com/uploads/1/3/4/5/134500295/f0f6001daa9.pdf
    • https://bitugibetofovo.weebly.com/uploads/1/3/0/9/130969362/6296357.pdf
    • https://lufojujerap.weebly.com/uploads/1/3/4/4/134481619/7450245.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/1b9d7d8a-7e16-485e-99cc-cbf2ba786dfa/69067232178.pdf
    • https://uploads.strikinglycdn.com/files/c9664eb2-cf99-49f5-a372-6cfb856d3892/vorew.pdf
    • https://uploads.strikinglycdn.com/files/e60b3cab-4427-4a39-ab63-df878a7532f6/plant_physiology_postdoc_positions.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1af.bin
ca63058be1c15dc1f355504b1a0303a54cade14f568d7a8a6c05b7fbfa84236a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AF 4792 bytes
font_01_sfnt_off0000f226.bin
aa0cac6240a8549e4e653fa81de2a236ef2f959e3e8e986a2e0c2cf248f140e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF226 10372 bytes

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