Malicious PDF — malware analysis report

Static analysis result for SHA-256 95fdec278233fcab…

MALICIOUS

PDF

98.3 KB Created: 2021-03-20 23:50:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: afa1a1fb0fb7b0683574d5515a405d18 SHA-1: 83360942fdbd759bec916d398c1357e07f683344 SHA-256: 95fdec278233fcabfa22405be0d61cbf87f09bd9ab74447fd6869746c88cd9ce
174 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document acts as a link farm, directing users to various external URLs, one of which is `https://resalured.ru/strik?utm_term=dragon+ball+manga+volume+1+download`. The presence of urgency lures and password protection instructions suggests a phishing or malware distribution scheme, where the PDF itself may be a lure to download a more dangerous payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://resalured.ru/strik?utm_term=dragon+ball+manga+volume+1+download PDF link annotation
    • https://cdn.sqhk.co/kugefiruxat/jb7UVEd/gawumaxusevefugojoku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443329/normal_603eb452174a2.pdfIn PDF document text
    • https://cdn.sqhk.co/gimiraxu/dzVhdgh/xawuxavodisebanu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476767/normal_5fe68bfc995a6.pdfIn PDF document text
    • https://cdn.sqhk.co/rebabafa/15gjxa9/65430291820.pdfIn PDF document text
    • https://cdn.sqhk.co/fewisezux/hYKifDC/emergency_dental_services_syracuse_ny.pdfIn PDF document text
    • https://cdn.sqhk.co/woteruzid/jNcgdG6/can_among_us_play_on_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/bikawegaj/hfV2Shc/15949483658.pdfIn PDF document text
    • http://biniwitovo.mywebcommunity.org/crazy_stupid_love_country_song.pdfIn PDF document text
    • https://cdn.sqhk.co/tawavumazo/jgfjgx5/pimizofiborenafigitisipak.pdfIn PDF document text
    • https://cdn.sqhk.co/nosuterib/sgeMiiM/nadenenefarabupufe.pdfIn PDF document text
    • http://palawawez.mypressonline.com/newumeputebajex.pdfIn PDF document text
    • https://cdn.sqhk.co/jotoselu/eifgege/hercules_son_of_zeus_movie_download.pdfIn PDF document text
    • http://famavusejozeroj.iblogger.org/digalujazu.pdfIn PDF document text
    • http://zoxejusozowevo.iblogger.org/15486478030.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443610/normal_6032f47f41b79.pdfIn PDF document text
    • https://cdn.sqhk.co/wikaraxixi/cjjvWhc/xbox_series_x_release_date_november_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b80e973-cb55-4610-bc48-6e2cb73d7611/mixenixat.pdfIn PDF document text
    • http://runumap.rf.gd/58654652459.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/337e05e8-f2e7-400e-85bc-a9f8cd800dbe/77740463778.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2afa1591-e8fd-4a1d-b28e-dda1c9e4139e/panasonic_kx-tgf382m_specs.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_off00013ffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FFD 5312 bytes
SHA-256: 66983f122a2dc04e0d574e34d30bed33612347f1912ed899d00b87a30c28e9e2
font_01_sfnt_off00015210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15210 13432 bytes
SHA-256: 5baf84a394f864d6c542b7e97019837e83eb3f360b6fe2397c6835178cf18d7f

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