Malicious PDF — malware analysis report

Static analysis result for SHA-256 27aa416ef1d25964…

MALICIOUS

PDF

46.1 KB Created: 2020-10-29 04:32:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 87712bef1a5ea59ec67493cc5483f31b SHA-1: 17d5aac16365c4501d4c31bcae97ff5cd65b87c9 SHA-256: 27aa416ef1d25964f95a43045cd40a2bdffe00fcfceb6539882a28951a9b2b63
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, including one pointing to known malicious redirector infrastructure at 'https://gettraff.ru/strik?keyword=ford+edge+owner%2527s+manual+2010'. The document body, though partially corrupted, contains text suggesting it is a lure for a vehicle owner's manual. The presence of a link farm on disposable hosting further supports a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 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.
  • 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=ford+edge+owner%2527s+manual+2010 In PDF document text
    • https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/vupugove_jimaburivug_punibafoj_wuvimokitagal.pdfIn PDF document text
    • https://sijevunima.weebly.com/uploads/1/3/1/8/131859613/9948166.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/bfe8426fb8ea8.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/bamudepekepa_setumazowido.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372384/normal_5f9531635edc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369174/normal_5f93ddb046c2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414153/normal_5f99f3c2b0695.pdfIn PDF document text
    • https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/2560394.pdfIn PDF document text
    • https://vibebivenef.weebly.com/uploads/1/3/1/4/131412032/5814302.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368225/normal_5f96c90948467.pdfIn PDF document text
    • https://miboxijudowisu.weebly.com/uploads/1/3/4/4/134491333/8943592.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://uploads.strikinglycdn.com/files/ac107dde-edec-4eba-80da-e8cf309afa14/cucumber_rest_assured_interview_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57ae36c9-a310-47bd-8fc2-1ad443103223/pizilixalalejamelerewa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/866861a6-7311-483f-8a4f-27d1a8f28e9b/one_piece_episode_602_english_subbed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e03da1f0-deb8-4e63-8b94-153ff06ccba7/bulalukoxilotela.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/2d_discrete_wavelet_transform.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47566898-b05b-4257-99d3-71a5e4b539ab/28834073348.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4077c27c-6ddb-4d1e-9f13-1cfe51625b87/dezenoxonoxam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ec77f9a-9b36-4057-b39d-6c38a81411ca/jarowozulifitukuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/012997b1-ada6-4874-8c37-d0103a21cef4/colombia_peace_agreement.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54FA 5304 bytes
SHA-256: cfdca7d1838709ab75047831917c5e0b3e0a95d333d5c3d3ff295651b309bfd1
font_01_sfnt_off00006700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6700 9456 bytes
SHA-256: 413b12520d5d902aee903897a00b7b0d1131c75072d41caf2a2a07cd39e47905
font_02_sfnt_off000087a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87A6 16060 bytes
SHA-256: 676c0883841b43d00b7ee9e48740bba0cd0e68334271d7a078f050a57dd23d8c
font_03_sfnt_off00009c3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C3B 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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