Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a6c36ef06ae395b…

MALICIOUS

PDF

92.4 KB Created: 2021-05-06 21:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3f07aacd49d0efb64aaf4f30b932dd4f SHA-1: 957b039b00fb0c3f98762439b1a5df8161b853ba SHA-256: 6a6c36ef06ae395b20569b3aeb5407991168413acee803b8fcfc8eeaf08b1aea
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 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/strik?utm_term=what+are+the+cleric+domains PDF link annotation
    • https://bebamewikirebu.weebly.com/uploads/1/3/0/8/130874540/xavonevugagube_xelabux.pdfIn PDF document text
    • http://falorilipeb.mywebcommunity.org/asmaul_husna_lengkap_dan_artinya.pdfIn PDF document text
    • http://repaircreditscore.info/el_vendedor_mas_grande_del_mundo_frases_gratisx0dli.pdfIn PDF document text
    • https://cdn.sqhk.co/silagigud/jaichiw/41347613068.pdfIn PDF document text
    • https://zizojatemizowen.weebly.com/uploads/1/3/4/0/134016780/ffedc831c10c4.pdfIn PDF document text
    • http://metryck.info/rotawenethhfki.pdfIn PDF document text
    • https://vazigawexike.weebly.com/uploads/1/3/1/6/131606690/8774319.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/dlBnBcM/music_player_2020_android.pdfIn PDF document text
    • http://chambre.xyz/taco_bell_soft_taco_fresco_nutrition_factszny8a.pdfIn PDF document text
    • http://elerctum.org/18748022292eer48.pdfIn PDF document text
    • https://cdn.sqhk.co/gunobawiwax/jpxheji/dobisobu.pdfIn PDF document text
    • http://kinemulawaw.sportsontheweb.net/autocad_2020_electrical_tutorial.pdfIn PDF document text
    • https://wunogalabapa.weebly.com/uploads/1/3/4/6/134603674/1ddd97a87b39c.pdfIn PDF document text
    • https://mexilaret.weebly.com/uploads/1/3/0/7/130775974/kogomagenedim.pdfIn PDF document text
    • https://cdn.sqhk.co/jiguluzufuwa/6iajihd/notification_ringtone_apple_watch_and_iphone.pdfIn PDF document text
    • http://yourbigdick.space/60116396140dkolj.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefima/trNghe0/45352479362.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/5423eaa6-cbff-46b4-b97a-27aa458633cd/mewenanunozeloro.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/encyclopedia_of_spirits_judika_illes_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6284b9bb-c7fd-40f8-85b1-fee8430c9082/82711678517.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05c3b1c8-6d97-486c-9ef4-3d2bfcedd1b5/who_are_the_richest_billionaires_in_america.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/vojarujusawed.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FD6 4980 bytes
SHA-256: 8d81240f9c5001f0b6be55d18db72f87e23f34085db8a7f82386abab15cce814
font_01_sfnt_off00013099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13099 11100 bytes
SHA-256: 598c945c96a844696a430bba35cb6efd1cd1a310782705fc99d2bae9030de84c
font_02_sfnt_off0001561e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1561E 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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