Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8c74024730b4995…

MALICIOUS

PDF

64.0 KB Created: 2021-03-03 00:19:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b1c6e93be26c5211c01159e8fb636542 SHA-1: 1ad28ce3110c112433b7bcd3e282cf1142c17124 SHA-256: b8c74024730b49951a478ceae9dfc4780a930f8a60e579becf27882ba6ddb390
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://soxebez.ru/123?utm_term=how+to+use+wilton+tip+18 PDF link annotation
    • https://cdn.sqhk.co/sirejeforox/ghZogjH/ez_shopper_ltd.pdfIn PDF document text
    • https://cdn.sqhk.co/zumumolebajo/NiaHJhb/flight_tracker_delta_1289.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448548/normal_6036cdfdcac95.pdfIn PDF document text
    • https://dotofinadi.weebly.com/uploads/1/3/0/7/130740455/d32f4f53c7.pdfIn PDF document text
    • https://cdn.sqhk.co/xuluriwu/hegdjha/7_wonders_duel_rules_pantheon.pdfIn PDF document text
    • https://cdn.sqhk.co/fakodozug/id8wmhb/piano_lessons_for_toddlers_near_me.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386363/normal_5ff95f6df132f.pdfIn PDF document text
    • https://vudaxevagi.weebly.com/uploads/1/3/4/2/134234865/vowuwutanerevad-venuxovavat.pdfIn PDF document text
    • https://wiguvizokon.weebly.com/uploads/1/3/0/7/130776253/dusefejija-nuzaxet-teketokibu.pdfIn PDF document text
    • https://roguraluvi.weebly.com/uploads/1/3/0/7/130776180/fabigenatin.pdfIn PDF document text
    • http://kubosikavudux.mygamesonline.org/gukuzozevunekejanepavalu.pdfIn PDF document text
    • https://lanekugufer.weebly.com/uploads/1/3/5/3/135351315/6566937.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/schlage_encode_smart_wifi_keyless_entry_deadbolt_lock.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/how_to_update_android_box_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/bedoes_chopaki_nie_pacz.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_off0000be79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE79 4808 bytes
SHA-256: ddceaa1a24a675a793c6cfbd6368808ca216c8c7ba54adbedaf59d6407717cdc
font_01_sfnt_off0000cf03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF03 10916 bytes
SHA-256: 256e81cc1034c489ec90f2ea6181a0f1fd97f706d600032b97c47ab509f658fa