Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae5650f71d0f8857…

MALICIOUS

PDF

71.5 KB Created: 2021-04-05 23:02:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: b7cb26d79e44e8e77f768653d9dce995 SHA-1: 5549396a9b3f118d7a4aa2b94f6ad70eac4c667a SHA-256: ae5650f71d0f8857a7489f0f09f3c2ecffde49d283824af0cc39b184dd04c5a8
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://golowaki.ru/award?keyword=the+economist+magazine+pdf+free+download+2020+may PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454436/normal_604f5f852e8ac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402737/normal_60007fba9987f.pdfIn PDF document text
    • https://cdn.sqhk.co/rapovebakeb/ghgjGhg/49091820687.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473902/normal_60420df1d921d.pdfIn PDF document text
    • https://cdn.sqhk.co/dofewijoras/ZigjhFP/agl_energy_limited_share_price_drop.pdfIn PDF document text
    • http://laulu-go.ru/jasegigunajubanun2d.pdfIn PDF document text
    • http://osmosiotzs.fun/34443691399w5s9z.pdfIn PDF document text
    • http://dezlice.ru/73038800359emsa6.pdfIn PDF document text
    • http://zoo-taxi.site/98815839142mag1d.pdfIn PDF document text
    • http://egrn-order.online/migivorejujexonusexabumfyfvk.pdfIn PDF document text
    • https://cdn.sqhk.co/fupipevu/iHib41v/73130987323.pdfIn PDF document text
    • https://cdn.sqhk.co/virapazetif/ZXihhg1/rizanepuzegasaleg.pdfIn PDF document text
    • https://cdn.sqhk.co/mutuwatu/lJ5Qiet/sculpture_park_des_moines.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dipijiz.epizy.com/vebenelozetikijijefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c4df3b7-87b3-40ff-bc2a-30195003cf86/vuritarenidis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/221cf181-f5a9-4c7a-b1a7-0d4a3a10cf94/75977450060.pdfIn PDF document text
    • http://gizimup.epizy.com/can_t_help_falling_in_love_violin_and_piano.pdfIn PDF document text
    • http://bexalawisilinot.epizy.com/niveles_de_lectura.pdfIn PDF document text
    • http://duwagisu.epizy.com/arcmap_10._1_free.pdfIn PDF document text
    • http://fixeruzebiket.rf.gd/17802210434.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_off0000d81f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD81F 6036 bytes
SHA-256: abb2b565cbc2cea3f1835af5fa47fc4a164c6895c5143defb1224786a98d2d90
font_01_sfnt_off0000eca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA2 10732 bytes
SHA-256: 914778d27a3597f05646e539d1e61e9e281286b71fa154fc930b39090c1c857c

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