Malicious PDF — malware analysis report

Static analysis result for SHA-256 5510791846d59e8b…

MALICIOUS

PDF

76.0 KB Created: 2021-03-06 23:40:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 096be1d8f0a732a629abb34c2163a070 SHA-1: db6ee699a2c7deef1aa1156da18ed6c613439fdb SHA-256: 5510791846d59e8b4bfdd48e77067f97f47175ea2057d1b90071aa205b49b8cb
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'bologen.ru', which is likely part of a phishing campaign. Although no scripts were explicitly extracted, the PDF structure and the presence of external links suggest an attempt to redirect the user to a malicious site, possibly for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/123?utm_term=how+to+start+ge+adora+dishwasher
    • https://cdn-cms.f-static.net/uploads/4366014/normal_5fd649038ebad.pdf
    • http://my-favshopd.online/try_it_free_generation_geniusdkgcx.pdf
    • https://cdn-cms.f-static.net/uploads/4467601/normal_603c18b61f8f1.pdf
    • http://zoguponuwuxoli.medianewsonline.com/how_many_calories_in_a_cherry_limeade_slush_from_sonic.pdf
    • https://static.s123-cdn-static.com/uploads/4475853/normal_5fce0a1aa8926.pdf
    • http://paypallsecurity.com/439550548116mx7n.pdf
    • http://lisifakus.66ghz.com/kosetegifanepuvulex.pdf
    • https://static.s123-cdn-static.com/uploads/4489730/normal_5ff30ed8182f8.pdf
    • http://mavosidofawuge.22web.org/summer_escapes_pool_pump_conversion_kit.pdf
    • https://cdn-cms.f-static.net/uploads/4368478/normal_600b3cc4c41b3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3e76baf3-5b25-499b-8c85-39424636bda0/4261242909.pdf
    • https://uploads.strikinglycdn.com/files/6b0980dd-b46b-455c-9792-4bf3cdaa2e19/what_is_optical_absorption_definition.pdf
    • https://uploads.strikinglycdn.com/files/149f2155-4d52-4f18-b082-be05c4320972/why_is_my_internet_connection_not_private.pdf
    • https://uploads.strikinglycdn.com/files/b5c6a545-b58c-41d2-b1f5-b95adf81032a/89552540839.pdf
    • http://sewepara.epizy.com/sijeg.pdf
    • https://uploads.strikinglycdn.com/files/1fc39dd9-53a1-42b9-a4f3-d7931dad4dee/89365928681.pdf
    • http://moferamobonar.epizy.com/limudawosegul.pdf
    • https://uploads.strikinglycdn.com/files/e74a63be-fa70-40b1-b24d-1281c1e93ca0/palipofinosonujilelitov.pdf
    • http://fedonefekipide.myartsonline.com/kumaparapufaf.pdf
    • http://tefetuzuzip.myartsonline.com/harry_potter_and_the_goblet_of_fire_book_chapter_6.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebbf.bin
7d2ed13c9da9e29f088ff1e8beb988207566e9421600aaa5cb91c7933e61a7e4
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBBF 5108 bytes
font_01_sfnt_off0000fd23.bin
57a1b87c956e5c71eece02164812b7286713a6e7fdef71cef55345e3a12c9f23
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD23 11092 bytes