Malicious PDF — malware analysis report

Static analysis result for SHA-256 288c77c88dc8a3e7…

MALICIOUS

PDF

73.3 KB Created: 2021-02-22 12:53:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 25366f36b6a51ab849ce97773666e3e3 SHA-1: d758189481039fadb254eb57313a6340d5b59a1f SHA-256: 288c77c88dc8a3e7d423db38e067942ec32e8c4a6513b57fe91c7583d7510b5d
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan variant. It contains numerous external links, many of which are hosted on disposable domains and appear to be part of a link farm designed to obscure the ultimate destination. The document body, though heavily obfuscated, suggests a lure related to printer drivers, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/strik?utm_term=hp+photosmart+plus+all-in-one+printer+series+-+b209+full+feature+software+and+driver PDF link annotation
    • http://fezopurabozel.iblogger.org/32615746164.pdfIn PDF document text
    • https://zodemabu.weebly.com/uploads/1/3/4/8/134896511/9224110.pdfIn PDF document text
    • http://kosufezegaxid.iblogger.org/free_antivirus_for_android_tablet_reviews.pdfIn PDF document text
    • http://moresukko.ru/brendon_burchard_planner7r3le.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444371/normal_5fc5a059897d3.pdfIn PDF document text
    • https://panonalosisewe.weebly.com/uploads/1/3/5/3/135316392/c86bfda5301.pdfIn PDF document text
    • https://duzareledibasa.weebly.com/uploads/1/3/4/8/134890493/6975368.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zofududa.rf.gd/5117834093.pdfIn PDF document text
    • http://sobogasitizi.epizy.com/project_initiation_report_template.pdfIn PDF document text
    • http://xegilejefaga.epizy.com/31248005419.pdfIn PDF document text
    • http://vejaxuka.epizy.com/this_is_water_david_foster_wallace_fish_video.pdfIn PDF document text
    • http://sijisizaf.rf.gd/beatles_in_my_life.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_off0000de0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0A 5996 bytes
SHA-256: 2e3f240f377bd79b0f3bb0a806a8127dedb626c41eccc004c73302664ad40519
font_01_sfnt_off0000f252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF252 10800 bytes
SHA-256: 15bfc1e57149684ddcc9baced0a501a72fa7d540a4fca5058253a89a8a32bf7e

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