Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b4e4c40d41be808…

MALICIOUS

PDF

85.1 KB Created: 2021-03-27 21:09:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: b4ac79c22e5ec7e31c40ab8b9ff4cbc1 SHA-1: d332db46816af69e0f56d89d82ab1af840e9a56b SHA-256: 0b4e4c40d41be80828b01152a987a024d32b95c0e6310e1e7b9ca0586a228a6b
186 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links to external websites, many of which are hosted on disposable domains or link farms, suggesting a phishing or SEO poisoning campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious content or phishing sites. No scripts were extracted, but the PDF structure itself is used to host and distribute links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://midufefew.ru/award?keyword=formulation+and+evaluation+of+buccal+drug+delivery+system+pdf PDF link annotation
    • https://wisiwojapano.weebly.com/uploads/1/3/4/8/134896472/861227c91.pdfIn PDF document text
    • http://power-guard.shop/17915576022c112.pdfIn PDF document text
    • http://santecmb-sarl.com/pegisemariginaranatbrn6m.pdfIn PDF document text
    • http://axecheat7.xyz/one_touch_ultra_mini_instructionse6axz.pdfIn PDF document text
    • http://tafuxasomup.getenjoyment.net/the_measure_of_a_man_book_quotes.pdfIn PDF document text
    • http://thedefenseforge.com/naxilipckrxf.pdfIn PDF document text
    • https://tapogizixe.weebly.com/uploads/1/3/4/8/134897788/2726c61f26f14a.pdfIn PDF document text
    • https://feroraja.weebly.com/uploads/1/3/0/9/130969346/8117240.pdfIn PDF document text
    • https://panebafizi.weebly.com/uploads/1/3/4/3/134365464/neguda.pdfIn PDF document text
    • https://basupetuwesaf.weebly.com/uploads/1/3/0/7/130739706/zupid.pdfIn PDF document text
    • https://wojedebaroz.weebly.com/uploads/1/3/1/6/131637691/9104708.pdfIn PDF document text
    • https://nunodovov.weebly.com/uploads/1/3/1/3/131380210/8565444.pdfIn PDF document text
    • https://ruzamoga.weebly.com/uploads/1/3/4/7/134761687/4212918.pdfIn PDF document text
    • http://bedating.online/additional_family_information_form_canadajqczz.pdfIn PDF document text
    • https://fejigurize.weebly.com/uploads/1/3/4/5/134509658/xereloremof.pdfIn PDF document text
    • https://zajavaka.weebly.com/uploads/1/3/5/3/135322154/6717397.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://af30af13-e0b7-4de0-aca7-7783c01eade2.filesusr.com/ugd/9757e7_e4f0460f64964e7cad982a5150f9f38b.pdf?index=trueIn PDF document text
    • https://e082cb0d-9c22-4a21-acb7-e2c6127a51d3.filesusr.com/ugd/ff0c06_c8d86e6fa09f4aca970ac1b801ffc1fc.pdf?index=trueIn PDF document text
    • https://457cefd1-268f-49c0-9ca4-ced5ac281e6b.filesusr.com/ugd/983758_64b0a268749e4bbab93da5228852825c.pdf?index=trueIn PDF document text
    • http://xomapagovujux.atwebpages.com/movie_oxford_dictionary_definition_of_woman.pdfIn PDF document text
    • http://netomadutimafe.onlinewebshop.net/how_long_does_it_take_for_a_black_and_decker_drill_to_charge.pdfIn PDF document text
    • https://3f9320ff-391d-49df-b192-c557e211a93c.filesusr.com/ugd/469aea_7fcd45f0463448a7836603b981e89489.pdf?index=trueIn PDF document text
    • https://3f740848-0e57-4b51-8596-564812021bec.filesusr.com/ugd/cbe17c_d75fe3dcac4a492c951c2195ef54e882.pdf?index=trueIn PDF document text
    • https://1a2149e7-ca7f-4e7c-a584-0e483de6f3af.filesusr.com/ugd/9219f8_751ebfceb7334f3ca8c75fd97d016aaa.pdf?index=trueIn PDF document text
    • http://ralirajuz.atwebpages.com/medium_difficulty_word_search_puzzles_printable.pdfIn PDF document text
    • https://29c5b005-6627-40e3-9da1-9f9d3dbc34dc.filesusr.com/ugd/7ad284_2a92dfcf38b3472396f204ba95ab6398.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF29 5616 bytes
SHA-256: 98ae579d87d241238dd7bec1d3ea956a3c63b840949d4c992236259d2d37328d
font_01_sfnt_off00011234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11234 10916 bytes
SHA-256: 17bba0f5a4925fb600b7caa0a8ab31d022f4965f667e08199553a7f9cd751310
font_02_sfnt_off000137c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137C1 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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