Malicious PDF — malware analysis report

Static analysis result for SHA-256 54fae2a9f84afe45…

MALICIOUS

PDF

72.5 KB Created: 2021-02-16 08:52:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 80d987a2eee7c14d56da4ff4acff228a SHA-1: 2540c97dd612fa51ba1b2ab50619297566be32e5 SHA-256: 54fae2a9f84afe455e95df7839895c27dd488e33bec0dbf6dc22f7203e079e15
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains multiple embedded URLs, including one that appears to be a redirector for a download lure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the presence of a 'download button' heuristic suggest a phishing or scam attempt. ClamAV detection further confirms its malicious nature, identifying it as 'Pdf.Phishing.Trojan-d2568dad23a94d95'. The document body, though heavily obfuscated, contains text related to downloading MP3s, aligning with the phishing lure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/strik?utm_term=best+nigeria+worship+songs+2020+mp3+download PDF link annotation
    • https://jawuzomave.weebly.com/uploads/1/3/4/6/134660074/xigiminiwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490274/normal_5fd1bc80bec4e.pdfIn PDF document text
    • https://cdn.sqhk.co/pesuxitum/jjKGgcZ/john_gba_lite_pokemon_fire_red_trade.pdfIn PDF document text
    • https://cdn.sqhk.co/jovakuki/cjchelu/47966222621.pdfIn PDF document text
    • http://vidavubaxo.22web.org/vawuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426699/normal_5fdb8bc511489.pdfIn PDF document text
    • https://cdn.sqhk.co/widiroje/PjcsUia/road_racing_car_games_ps4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379485/normal_5fddfc00458b1.pdfIn PDF document text
    • https://cdn.sqhk.co/poronujefino/BgjrjdF/discounts_at_walmart_vision_center_coupons.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410989/normal_601b4803bf309.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472198/normal_600362ec1f885.pdfIn PDF document text
    • https://cdn.sqhk.co/mojikeke/X8PRoA3/best_ice_cream_delivery_san_francisco.pdfIn PDF document text
    • https://kabugumaka.weebly.com/uploads/1/3/6/0/136099465/00bfd3e4281b97.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nemevefer.rf.gd/gakazak.pdfIn PDF document text
    • http://wubexemetaxoru.epizy.com/minokimezizodatekil.pdfIn PDF document text
    • http://fokuxukidedir.rf.gd/96583995236.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_off0000dc36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC36 5952 bytes
SHA-256: 3de454de5935717d1298c4698e79db22cd592685f60ffc1a5e22d359524bf929
font_01_sfnt_off0000f060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF060 10684 bytes
SHA-256: 959b8cf7f9c665e70da0fb4828ca03415d70fdc5ad0f6f80b8459363483fdd83

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