Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fbc94995460dd70…

MALICIOUS

PDF

56.0 KB Created: 2020-10-01 16:14:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9077d17f062cc4f9fa0cb8fa46b88bfb SHA-1: d785e9a597a8f150721c51234f3facc242d3e50f SHA-256: 2fbc94995460dd70faf7aac5e6cf39300d43a33b87ee924fe932414a49b2a448
124 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, includes the URL 'https://gettraff.ru/strik?keyword=adventure+tourism+activities+pdf', which is flagged as malicious. The presence of numerous links on disposable hosting suggests a link farm designed to distribute malicious content or phish users.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://gettraff.ru/strik?keyword=adventure+tourism+activities+pdf In PDF document text
    • https://site-1036680.mozfiles.com/files/1036680/16726466260.pdfIn PDF document text
    • https://site-1037916.mozfiles.com/files/1037916/80477379364.pdfIn PDF document text
    • https://site-1039658.mozfiles.com/files/1039658/47997499409.pdfIn PDF document text
    • http://files.centralstockcare.com/uploads/1/3/1/6/131637137/7f1191d1ca5.pdfIn PDF document text
    • http://files.psychoneirology.org/uploads/1/3/0/7/130775862/3ea95b80e1829.pdfIn PDF document text
    • http://files.mygirlsevents.com/uploads/1/3/2/6/132682076/e5f0673f96f6eae.pdfIn PDF document text
    • http://files.bustransform.com/uploads/1/3/2/3/132303010/tafezugebex.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8067/8553/files/moen_cartridge_puller_walmart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6139/3046/files/hugo_wii_channel_forwarder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/7225/1814/files/slimming_world_syns_list_alcohol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8708/5222/files/57295791195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5322/6913/files/dopigaxeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d94eaf21-1707-4ab4-a3f3-8ab09065ce88/86251576200.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf8ef7ac-4e40-4ee0-bd95-967f8b933177/kefif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/094ebc43-4f73-447b-a28e-aa9b96afd935/73571793726.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000607a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607A 5588 bytes
SHA-256: d41dd2a7916fb5309eaf9507cdc7847779dfc0542ff90758a53adffd8fba454d
font_01_sfnt_off00007403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7403 5200 bytes
SHA-256: 7b5452e4610ee734c8a2a57f0ec37db59b8b0bd167aafe89fe261ac6943ea203
font_02_sfnt_off0000859d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x859D 11380 bytes
SHA-256: 42df457fc751dd7e33430a0ee32fdc7ed55a51a5675206ef3ac2ea88792fc116
font_03_sfnt_off0000acc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACC8 16612 bytes
SHA-256: a0f0f1354c9ff62f90f9933709b4b0b28a4f7ac2a8b42ca1e7e9e8d6581bed15
font_04_sfnt_off0000c3e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3E9 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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