Malicious PDF — malware analysis report

Static analysis result for SHA-256 0daadcd9bbfe28a3…

MALICIOUS

PDF

108.7 KB Created: 2021-02-17 16:31:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 801c01b6df2316e21fa849bd65f473b0 SHA-1: a0bed4d08a62439eb1bc206c5b37c689d4b4a8a2 SHA-256: 0daadcd9bbfe28a3a37ea2a7cb704d498f39cebb2b69954f3ca082dca3f6d5d8
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is flagged as malicious by multiple heuristics and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or redirection scheme. The primary URL points to a setup guide for a Pioneer VSX-1022, likely a lure to entice users to click through to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/strik?utm_term=pioneer+vsx+1022+wifi+setup PDF link annotation
    • https://cdn.sqhk.co/jekefebiba/LjehePx/color_maze_functions.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/AChbj9G/english_songs_with_lyrics_download_video.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415302/normal_60125363b8dd6.pdfIn PDF document text
    • https://topudamix.weebly.com/uploads/1/3/4/5/134581811/veranavetusoxe_konutunal.pdfIn PDF document text
    • https://cdn.sqhk.co/fenazijeguk/P8ERPib/voa_news_persian_tv.pdfIn PDF document text
    • https://cdn.sqhk.co/muluxodipoto/Xhbgchc/541203946.pdfIn PDF document text
    • https://cdn.sqhk.co/suxupijisajo/hstnHje/kubitilabofukubixabone.pdfIn PDF document text
    • http://natbeach.space/nfs_heat_studio_not_working_ps4hueb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409811/normal_602be25a4a9f2.pdfIn PDF document text
    • https://cdn.sqhk.co/vixukose/djcBjiQ/4276408793.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469828/normal_60228c16ca841.pdfIn PDF document text
    • https://xijiweba.weebly.com/uploads/1/3/5/3/135387982/tevibasufemam-tobama-zawazowat.pdfIn PDF document text
    • https://zanixikowupu.weebly.com/uploads/1/3/1/4/131437740/rudipawugimijar_lagegidiz_zojenebavo.pdfIn PDF document text
    • https://sugodaxekot.weebly.com/uploads/1/3/1/8/131872070/xuxipijakorafop_rokebis.pdfIn PDF document text
    • http://4gusevshop.website/billboard_top_rock_songs_of_the_70_sr8v1p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464524/normal_600d8b6407ce5.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/lixisariwulo/ximiminov.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/lonedolarobakunira.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014d04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D04 3032 bytes
SHA-256: b6bc819ca70c6b62c725170a8dac6c3010cf0e41df68490bb10075d7aaad6741
font_01_sfnt_off000157d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x157D4 5200 bytes
SHA-256: f47c6d7e89af85a26321339b8e838918c70d6ddc55f393206b85f3c01cae2a3c
font_02_sfnt_off000169be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169BE 10944 bytes
SHA-256: 6d68671abd38db34662f7f01dc5dddc4110f66d7dc9a573751b1d55f5c42eda4
font_03_sfnt_off00018f4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18F4D 16176 bytes
SHA-256: bdf747542c92e40b04a5371032a651b344d5921efcc7a9b09bb26c01bfd63df1