Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe4696257441d8b6…

MALICIOUS

PDF

78.9 KB Created: 2021-05-03 00:42:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 8bbbd5e8b60714a0133861929804c19a SHA-1: 90a2cf2c87fbe0929b2a61dc0a8f6d04c6ea9852 SHA-256: fe4696257441d8b60b5564483b8bce308cb7de4039c3331459c948fce3e5496f
126 Risk Score

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 0.9993

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://fokemale.ru/strik?utm_term=how+to+draw+a+realistic+human+heart PDF link annotation
    • http://nomenowunesazoz.scienceontheweb.net/pugoxirufixogodi.pdfIn PDF document text
    • http://sikevemekoma.mypressonline.com/47279578354.pdfIn PDF document text
    • https://cdn.sqhk.co/wizevomorofe/7jg5fCL/putularuzufutagobe.pdfIn PDF document text
    • http://wijawoga.22web.org/bajaur_agency_map.pdfIn PDF document text
    • http://popuboloza.22web.org/lagu_yang_terdalam_fatin_mp4.pdfIn PDF document text
    • https://cdn.sqhk.co/zarejesorufo/b3yGXiR/53811675114.pdfIn PDF document text
    • http://kesisofawa.mygamesonline.org/wibizijumodixorus.pdfIn PDF document text
    • https://cdn.sqhk.co/sevigexew/bgeRFjb/break_time_meaning_in_urdu.pdfIn PDF document text
    • https://cdn.sqhk.co/tefazaturar/8Eiihhh/10845640710.pdfIn PDF document text
    • https://cdn.sqhk.co/ropobemuma/Egc5jfm/17193618076.pdfIn PDF document text
    • http://kijekidajefi.getenjoyment.net/metera.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://diwixadareji.epizy.com/restaurant_billing_system_project_documentation.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/filmyzilla_bollywood_hd_movies_2019.pdfIn PDF document text
    • https://87b84290-c0b3-4c73-97a1-3d59c64c3f69.filesusr.com/ugd/c638b7_bd96847470494f9791bc4a77a57a3efc.pdf?index=trueIn PDF document text
    • https://cd70d4e5-4a1a-4071-96d1-f2415ea5ece1.filesusr.com/ugd/7f46b5_8d5224e2963b40dda9ffc81b1c4a2451.pdf?index=trueIn PDF document text
    • http://zovoxasus.rf.gd/77469178275.pdfIn PDF document text
    • http://lubozogemodusa.epizy.com/45022372123.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/229609583.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/daduvemudalol.pdfIn PDF document text
    • http://madukavinoxonal.epizy.com/79986960471.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/canon_mx300_ink_absorber_full_message.pdfIn PDF document text
    • http://jukikusikodopom.epizy.com/62053765076.pdfIn PDF document text
    • http://lokimutopilar.epizy.com/fm_2017_scout_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/troy_bilt_riding_mower_blades_wont_disengage.pdfIn PDF document text
    • http://juroluse.rf.gd/mastering_the_swing_trade.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f91c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF91C 5232 bytes
SHA-256: 377a6781a472ea26bd9e5b453a3a5d8525b3b53fd5e4e1f2f3c83ee7834d23bb
font_01_sfnt_off00010ac7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AC7 10268 bytes
SHA-256: fa3cd0d0053e89b237af1695380ed2f1f1c25c65ad1a2725b294d9080ffdebfa

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