Malicious PDF — malware analysis report

Static analysis result for SHA-256 f00936c1d20b2038…

MALICIOUS

PDF

90.6 KB Created: 2021-03-10 06:46:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: cb7e4aa4ea8fe967a496972e4ec1fe1f SHA-1: 27f5dd0ff8e9d0181c06e0dd426a9d9ce02debbc SHA-256: f00936c1d20b2038683b9315c4f8dbb489c54927bd9ca09f023b0e9ac3312e08
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 0.9991

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://xajibur.ru/strik?utm_term=is+megaboom+3+louder+than+megaboom PDF link annotation
    • http://istlan.space/vejinobobuxapbx8em.pdfIn PDF document text
    • http://xejobaxonewaf.iblogger.org/59690037586.pdfIn PDF document text
    • https://cdn.sqhk.co/zarepowake/Db2gehb/wamuxoripoxanugalazuxe.pdfIn PDF document text
    • https://cdn.sqhk.co/jekuzedu/jgRhdig/free_bubble_breaker_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/tici2jg/43585520891.pdfIn PDF document text
    • http://zagavexakagin.mypressonline.com/44611387371.pdfIn PDF document text
    • http://dutivozupofamap.22web.org/36605787211.pdfIn PDF document text
    • http://qlemelest.online/8816467867wlnrz.pdfIn PDF document text
    • https://cdn.sqhk.co/venitalobeni/dgcyL1K/kasivaxozajunupev.pdfIn PDF document text
    • http://getsol.xyz/flash_flood_albert_pike_arkansaskhuje.pdfIn PDF document text
    • http://espaceabone.com/474888293689jesm.pdfIn PDF document text
    • http://vijevejumozugim.sportsontheweb.net/16975352647.pdfIn PDF document text
    • http://kapusta.pro/vugumatotonivokonfemdz.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/qiiicea/light_bike_stunt_racing_game.pdfIn PDF document text
    • http://nopuvobetag.mygamesonline.org/sujekigesu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3082239-b169-4b78-96c5-b5f1d3c6fcf5/67542648450.pdfIn PDF document text
    • http://zogosugo.onlinewebshop.net/kaxadifibigajuk.pdfIn PDF document text
    • http://fepaxediv.rf.gd/juvewixisuwekewusen.pdfIn PDF document text
    • http://lagadasisipas.rf.gd/11307309087.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb29c0be-d953-4cc1-ae8e-4a6de1d9967d/99620550124.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a056a4e5-b6b8-4a29-84bd-a78fc15ee189/the_monk_and_the_riddle_by_randy_komisar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fffc030-ac5a-456b-bce3-0932a43a3014/how_to_connect_usb_in_scv_set_top_box.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/599e1662-d300-4f98-b3f3-a0fc89149dc6/story_of_the_eye_2004_watch_online.pdfIn PDF document text
    • http://fuzadakeju.epizy.com/22786914148.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_off000120a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120A6 5480 bytes
SHA-256: 5d8518ed611ae172be4fa752a30dfa34dbfad6220221663986307400ae6ecd28
font_01_sfnt_off00013313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13313 12660 bytes
SHA-256: bcddbf74ccfb8c0ece08f4bf9a7976c5188ae57a7042c24573d7daf5071d971b

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