Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc1fb6167dcc8b5c…

MALICIOUS

PDF

77.9 KB Created: 2021-02-15 23:26:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 84a6047d712c84e0975ea21a180004cf SHA-1: cc95a5476c5550d0ea02b02d5197297178a43187 SHA-256: dc1fb6167dcc8b5cd7c4eba24c88f1a6605281971b1e1725c26edc165d7f7de7
134 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it is a link farm on disposable hosting and uses an invoice lure, suggesting a phishing or scam attempt. The embedded URL points to a domain associated with a search query for obtaining a provisional license, further supporting the lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious intent, likely to redirect users to a malicious site.

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 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://druttle.ru/strik?utm_term=how+to+get+a+provisional+license+in+sc PDF link annotation
    • http://dutuvowori.22web.org/answer_back_crossword_clue.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411916/normal_5ff285b3247cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489035/normal_602634020376d.pdfIn PDF document text
    • https://cdn.sqhk.co/supopelax/VORgf4n/sleep_nature_sounds_music_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kutupejotige/60XjfvK/uefa_champions_league_group_stage_draw.pdfIn PDF document text
    • https://cdn.sqhk.co/nugofonavuf/jamhbNq/75095107726.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483864/normal_5ffb3927a57d0.pdfIn PDF document text
    • http://thefortykuti.com/lujanalamiavgch.pdfIn PDF document text
    • https://cdn.sqhk.co/nudabesawi/hcSD9ig/22920639506.pdfIn PDF document text
    • https://cdn.sqhk.co/zudoputasafe/ahdxhiJ/87223516281.pdfIn PDF document text
    • http://xogezile.66ghz.com/knockout_fixture_template.pdfIn PDF document text
    • https://cdn.sqhk.co/sekeniti/hbgigd4/fumanabuxemupofise.pdfIn PDF document text
    • https://cdn.sqhk.co/gajerivab/7LjgJPp/pong_3d_unity.pdfIn PDF document text
    • https://cdn.sqhk.co/fogibadeku/idijF8e/laniwade.pdfIn PDF document text
    • http://bitsracing.net/blue_apron_stockv7nn7.pdfIn PDF document text
    • https://cdn.sqhk.co/figegixo/fhcShcO/59725580669.pdfIn PDF document text
    • https://cdn.sqhk.co/jagojixego/hf2N8Uo/endless_run_magic_stone.pdfIn PDF document text
    • https://cdn.sqhk.co/kezixowog/6Nicid0/weather_atlanta_today.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kiroxivox.epizy.com/adryana_e_a_rapaziada_discografia.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_off0000f4d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D6 5212 bytes
SHA-256: 85005a50856b07278feb7c7b57b7bdb74bad803fac65660f8bce656df2e2b16b
font_01_sfnt_off000106c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106C1 10472 bytes
SHA-256: 50099a52128a5843f50b2c30e2873f48d7ac805d38e1352bbb615a9cab9a1593

Open this report in the interactive analyzer, or submit your own file for analysis.