Malicious PDF — malware analysis report

Static analysis result for SHA-256 483614afe1ac16d0…

MALICIOUS

PDF

79.2 KB Created: 2021-05-12 00:37:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 944d3222b955bb3847f538316e6383ce SHA-1: 941ebe43ca0884032aee6ca153563068515e9b41 SHA-256: 483614afe1ac16d0b12be9b8b0a01cf365454acb9886a55da0aa4ffef9f03723
184 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting or known malicious redirectors, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though partially obfuscated, suggests a lure related to garage door repair, likely to mask the malicious links.

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
  • 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=how+to+replace+a+wayne+dalton+garage+door+spring In PDF document text
    • http://fito4ka.xyz/twilight_saga_new_moon_full_movie_free_123moviesoqfwh.pdfIn PDF document text
    • http://worldworkbook.com/para_q_sirve_el_te_de_manzanilla_con_canelai0qib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406463/normal_60452c54d537c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454172/normal_6009ce5c40df1.pdfIn PDF document text
    • http://kersita.fun/mulojexizesinazanarifuwniuaj.pdfIn PDF document text
    • http://xegisepereti.mygamesonline.org/1630575477.pdfIn PDF document text
    • http://com-connexion.xyz/sugenela2tlsd.pdfIn PDF document text
    • http://luminar2-download.xyz/wususimiz435n1.pdfIn PDF document text
    • http://chestlune.online/745828869222ezj2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382781/normal_5fd7d65621947.pdfIn PDF document text
    • http://bluebadgeform.com/89812456696o1xu7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475406/normal_603b8811b6c08.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://add83a7c-0e31-48b3-928b-061d82ba9144.filesusr.com/ugd/205ae4_bfff6f4561424f50b37637ca7a7f4bb7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/kazabelofuzelimusur.pdfIn PDF document text
    • https://37dcb74a-b492-4e6c-94d7-6984b04a3d7f.filesusr.com/ugd/01eaca_4066d65324ee431582bb1265590f6be4.pdf?index=trueIn PDF document text
    • http://lexekuduwowig.atwebpages.com/jspdf_autotable_header_and_footer_example.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/lavafadoki.pdfIn PDF document text
    • https://a50dbba5-e4fd-40cc-afa9-a45495a5accf.filesusr.com/ugd/7f929b_2abb839cdcf945abb965bc0f2cdc542f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sitok/browser_uc_browser_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/sutusalotej.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_off0000f96c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF96C 5396 bytes
SHA-256: 3e58dc8ad1c125b2199385cfac6048bd38893e86b06bb816097a9d4035ca1b14
font_01_sfnt_off00010beb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BEB 10824 bytes
SHA-256: 226f3d99def979f8480af0a570b68a5792ebe0a340ba151f5545cf08cb7c1996

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