Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fc6025a45d5ebe5…

MALICIOUS

PDF

67.5 KB Created: 2021-02-15 21:44:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e3d06ac99094e4f903a83eb6e8cd43c4 SHA-1: d7d502e684a755f2a7222f9649605e7bd71d12f0 SHA-256: 8fc6025a45d5ebe56c422033f4ac7f7643ace772ee553e67c3451dae7d82f2e4
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=uniden+bc72xlt+scanner+manual In PDF document text
    • https://cdn.sqhk.co/tufiroxova/ihffIQz/17856920866.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387037/normal_5fcbd5fc3a751.pdfIn PDF document text
    • https://zoparidozuxeb.weebly.com/uploads/1/3/5/3/135390671/b1f7130fd3.pdfIn PDF document text
    • https://fogufapepupol.weebly.com/uploads/1/3/1/8/131871477/luwef_fadanara_gepad_pevokunaguwebak.pdfIn PDF document text
    • https://cdn.sqhk.co/fofubulami/iifhcK1/rutabubusomorupixawaronem.pdfIn PDF document text
    • https://titerafutar.weebly.com/uploads/1/3/0/7/130775646/1549388.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368750/normal_5fde8e80d28cf.pdfIn PDF document text
    • https://jorojesa.weebly.com/uploads/1/3/4/8/134861508/8846068.pdfIn PDF document text
    • https://sugulone.weebly.com/uploads/1/3/2/7/132740418/bupamirotejawe.pdfIn PDF document text
    • https://japapetokanov.weebly.com/uploads/1/3/1/4/131454126/7515894.pdfIn PDF document text
    • https://sulomotosepotu.weebly.com/uploads/1/3/4/7/134744650/tamonovut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417536/normal_5fc5782cce7e2.pdfIn PDF document text
    • https://nijikubu.weebly.com/uploads/1/3/5/3/135347783/wemifon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390641/normal_5fc95c6d9f088.pdfIn PDF document text
    • https://regamozinog.weebly.com/uploads/1/3/0/9/130969170/59a0cc7103ffae.pdfIn PDF document text
    • https://cdn.sqhk.co/noruwotil/h2hcJF0/magic_rampage_wiki.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/fizaxo/72826283665.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/pune_11th_admission_net_part_2_form.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/hotstar_apk_old_version.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/fetomawevi.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_off0000c8b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8B2 5496 bytes
SHA-256: 74c48a765b7945a432c07f9fe03aded3882747602df51ed29c3711b4fc0b455a
font_01_sfnt_off0000db5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB5B 10456 bytes
SHA-256: 670e11bd1b9dcf18ad34a042fff93d7228a8156fe58490461fe0188fae9bd407