Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0cfaa31fac33cd0…

MALICIOUS

PDF

74.4 KB Created: 2021-01-25 08:07:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3b048fbce15a6703941ed0c82adc0869 SHA-1: 67964adac2ae765ebbdc5d3ca60bcff64dc4b988 SHA-256: a0cfaa31fac33cd02bbd16c3e3c248d2e9c701245c45549691178ea3774f430d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/wb?keyword=anger%20of%20stick%204%20apk%20offline PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383930/normal_5fea03740f872.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415309/normal_5fe52fcb9dd8b.pdfIn PDF document text
    • https://cdn.sqhk.co/sativomofij/rugijij/69870015438.pdfIn PDF document text
    • https://cdn.sqhk.co/giwumazusew/j7xgxhe/china_kung_fu_master_full_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/tefupudoma/iig6XCZ/momo_fake_call_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376354/normal_6006ded4420a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382429/normal_5fca123d5b51f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423471/normal_5feff95f5436f.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefimex/ajhjcx9/kiki_camarena_death_aftermath.pdfIn PDF document text
    • https://cdn.sqhk.co/gemadaruvow/giiV4he/71543113037.pdfIn PDF document text
    • http://pefujogori.iblogger.org/26422304111.pdfIn PDF document text
    • https://cdn.sqhk.co/gusoguribus/Jhaiojj/80189077954.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sikofus.epizy.com/cyanure_d_hydrogne_formule_dveloppe.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/zurulelovibawi.pdfIn PDF document text
    • http://soxalisaxofaba.epizy.com/jasper_report_alternate_row_color.pdfIn PDF document text
    • http://savekuf.rf.gd/nice_guidelines_head_injury_advice.pdfIn PDF document text
    • http://pejigevug.rf.gd/10820604891.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/pubekidozudasubimumumaluv.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_off0000e5dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DD 5324 bytes
SHA-256: a89123177633fb4018f4e82731b253a3eb9ec9bfc8ad46112307800781b70f45
font_01_sfnt_off0000f825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF825 10844 bytes
SHA-256: f27d8141f2cb76b9eb46ee144959b187da9c159b25e31a7a5f234cbda32ab5e0