Malicious PDF — malware analysis report

Static analysis result for SHA-256 63e3295bbbdadfd4…

MALICIOUS

PDF

74.6 KB Created: 2021-02-17 00:53:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: caca8a214ae87f7b77a5264303669c25 SHA-1: 1243bda249de84e8f8bf54e9f04c69fcfa08fe91 SHA-256: 63e3295bbbdadfd4942064e03de3472f123d22550069cc2b76620ad5a2895d66
184 Risk Score

Malware Insights

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

The PDF contains embedded URLs that lead to a known malicious redirector, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though partially corrupted, suggests a lure related to a board game sale, which is then used to disguise the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/strik?utm_term=original+dungeons+and+dragons+board+game+for+sale In PDF document text
    • https://static.s123-cdn-static.com/uploads/4489733/normal_5fcd8b7f0b50c.pdfIn PDF document text
    • http://netewe8.xyz/french_conversation_for_beginners4hm8r.pdfIn PDF document text
    • http://byt-upak.ru/wemaper1iv5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369498/normal_5fe5d3f66f371.pdfIn PDF document text
    • https://cdn.sqhk.co/jigugabopu/Eicig2j/jekidimilizesavu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373261/normal_5fdf46ae86e8b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375209/normal_5fdd336d78b34.pdfIn PDF document text
    • http://iclod.tech/dingus_khan_mongoliant7wl1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405202/normal_60258add2e82d.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/rebomedug/mepedimixaxijojoba.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/vabolezemuranexo.pdfIn PDF document text
    • http://fanirivi.rf.gd/jijobevivakepag.pdfIn PDF document text
    • http://xejonitofopim.epizy.com/black_sabbath_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/gymshark_leggings_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/66728991962.pdfIn PDF document text
    • http://dololesorut.epizy.com/hayes_auto_repair_manuals_online.pdfIn PDF document text
    • http://lawazujazigefon.epizy.com/airline_commander_apk_android_oyun_club.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/cabral_detox_guide.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_off0000e62e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE62E 5392 bytes
SHA-256: bbb384b74106d7a3bec595dd91b7fd5ff1b8e9d3f7765ac41574623f3c476195
font_01_sfnt_off0000f866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF866 10668 bytes
SHA-256: 62ce7eb225ba099ee4bb737290ac34c4bd7cf81fedeaa83764504e4c6e07ad32

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