Malicious PDF — malware analysis report

Static analysis result for SHA-256 7077e2b171cdaa9f…

MALICIOUS

PDF

81.1 KB Created: 2021-03-19 21:23:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: ad8bd3a5c56606fbf0017425fcad25b8 SHA-1: 2e3b0e36fa65f5cc938ef82204f2064fac7302f1 SHA-256: 7077e2b171cdaa9f52813712760ca9cca9c5ae9f752d42872ba137a4b0f0409a
126 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many hosted on disposable domains, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary URL, 'https://soxebez.ru/strik?utm_term=why+isn%2527t+my+honeywell+heater+working', is likely part of a lure to direct users to a malicious site. No scripts were extracted, but the overall structure and URL distribution point to a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/strik?utm_term=why+isn%2527t+my+honeywell+heater+working PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425009/normal_60476fb91333c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405419/normal_5ff5df59ad82d.pdfIn PDF document text
    • http://checkmycredit.info/dotopoxaweko6wj12.pdfIn PDF document text
    • http://gidilakapajuke.mywebcommunity.org/29130401550.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476767/normal_6039acab114fb.pdfIn PDF document text
    • http://volalagokiva.sportsontheweb.net/pdf_anita_konyvei._blogspot.pdfIn PDF document text
    • http://wowit.pro/29718756463k52f8.pdfIn PDF document text
    • http://hookup153.site/kavufukevogatimalumagra4of.pdfIn PDF document text
    • http://tapidiv.medianewsonline.com/leonardo_da_vinci_walter_isaacson.pdfIn PDF document text
    • http://sinoxaju.mygamesonline.org/todapatukolafata.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/09cd7bfd-1465-40b8-956d-9d02e746a648/butokadazis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29f873de-621f-4f2f-9bc5-436aae521e05/96969818403.pdfIn PDF document text
    • https://f45985d3-969e-4a4b-a16b-f92b7c881388.filesusr.com/ugd/20da2d_1256d8157835429699703bcaefad8170.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a79f5ad-a07a-4a59-9b73-de01db1e6d5f/what_came_off_netflix.pdfIn PDF document text
    • http://xolavozezimodan.onlinewebshop.net/amparito_roca_aubrey_winter.pdfIn PDF document text
    • https://0a3c8164-ddd9-4522-8472-457ce31ece15.filesusr.com/ugd/d32f78_aaf5034bc70442a8b81629cabca51f6c.pdf?index=trueIn PDF document text
    • https://11210a16-d5d1-4e17-93a3-27fbbb12f21b.filesusr.com/ugd/fb658e_4cb2825bac4e4de79ec06309eec9a357.pdf?index=trueIn PDF document text
    • https://ddf64d59-5240-4154-9987-17dfc28e22c7.filesusr.com/ugd/cec570_a5d75304c2b94983a93334ea7c409cd5.pdf?index=trueIn PDF document text
    • https://29c5b005-6627-40e3-9da1-9f9d3dbc34dc.filesusr.com/ugd/7ad284_adde830450164b5983c2715307271b7f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d04a39ea-a3f0-4b3c-868e-3f3a7b18bec9/6_best_cloud_security_certifications_for_it_professionals.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_off0000fee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE2 5404 bytes
SHA-256: b88be76839924cf47eee1e56415193b2e0704bbe7fed5bfd5b60e001cdeb0dec
font_01_sfnt_off0001113e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1113E 10924 bytes
SHA-256: 431a6997e5c78a641fee6e9d88a4792aefe790b4ac6d36d28e6104da0856fe40

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