Malicious PDF — malware analysis report

Static analysis result for SHA-256 1269465a50901773…

MALICIOUS

PDF

76.8 KB Created: 2021-03-04 03:14:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a6238b6be1dda2792e7b7c3fba956e62 SHA-1: 7f0bf6cdc48a24f292d3a1537c4ebb794440b8ea SHA-256: 1269465a50901773d73e708e6b94fbfaaacd850cc6ad463e187f55aad2189a29
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs pointing to disposable domains, indicative of a link farm designed to redirect users to malicious content. ClamAV detection and ML classification strongly suggest malicious intent, likely for phishing or malware distribution. The presence of external URIs and the nature of the embedded URLs suggest an attempt to exploit vulnerabilities or trick users into downloading further payloads.

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://jottigo.ru/wix?keyword=addictive+unblocked+games+impossible+quiz PDF link annotation
    • https://cdn.sqhk.co/dajuzafum/jclihhh/my_little_pony_harmony_quest_download_pc.pdfIn PDF document text
    • http://znalomstvavip.site/rasobiteferegosivarhd25.pdfIn PDF document text
    • http://torchqbfl.fun/6370590805793ul6.pdfIn PDF document text
    • http://zokupez.mygamesonline.org/29191328898.pdfIn PDF document text
    • http://biggymstoe.com/how_do_i_put_my_fitbit_flex_in_sleep_modeaa7q3.pdfIn PDF document text
    • http://bixaxivajujojar.mypressonline.com/fisaka.pdfIn PDF document text
    • https://cdn.sqhk.co/gegefemorosu/gAhghfA/leruwasojefe.pdfIn PDF document text
    • http://lisolu.org/nepaxejeponiriwipopajomtqq7j.pdfIn PDF document text
    • http://ital-tess.space/tintin_the_red_rackhams_treasureaq9o8.pdfIn PDF document text
    • http://samettemiz.xyz/wujad06oba.pdfIn PDF document text
    • http://callup.today/xavituwi799u6.pdfIn PDF document text
    • http://blu-ital.space/grimdark_future_battle_reportr3tst.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/gehidid/baby_lullaby_relaxing_baby_sleep_music.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425919/normal_5ff9e50ea2575.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408188/normal_601dbcbb7a873.pdfIn PDF document text
    • http://pakirekugep.scienceontheweb.net/96912713788.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://juruzimezez.rf.gd/pexatexoxozeveguketat.pdfIn PDF document text
    • http://lesiterifok.epizy.com/fafugijaripufak.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_off0000ecf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF4 5724 bytes
SHA-256: a9e7c777e9c4030bd0ff9c5863dd65ee79f0101dc9fff0d7b5946555f3e2b333
font_01_sfnt_off0001006c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1006C 10980 bytes
SHA-256: 30f3aefd5286b7f5c38ca872da8debd51f83ddd0d4fbb58196152decbd515a85

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