Malicious PDF — malware analysis report

Static analysis result for SHA-256 30ee161d259129d6…

MALICIOUS

PDF

43.7 KB Created: 2020-10-02 04:12:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 6b555a9ec2e8a8149931908e2f1dfd18 SHA-1: e1f50c4887789d7d18ce68fd1b994ac70181bfff SHA-256: 30ee161d259129d6a2a0784f4a14336c626a49fa3b84f0768c54c097f3e2f45f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and text that attempt to trick the user into downloading software. It directs users to a malicious URL, 'https://cctraff.ru/strik?keyword=usb+digital+microscope+measurement+software+free+download', which is flagged as a redirector to malicious infrastructure. The document also contains a large number of links to other PDFs, likely for SEO manipulation to increase visibility of the malicious content.

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 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.
  • 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://cctraff.ru/strik?keyword=usb+digital+microscope+measurement+software+free+download In PDF document text
    • http://files.leonmccarron.com/uploads/1/3/1/6/131606502/905ba34bfe44.pdfIn PDF document text
    • http://files.larsenhusby.com/uploads/1/3/0/7/130739144/1997654.pdfIn PDF document text
    • http://dufovira.sabinesteinmetz.com/uploads/1/3/2/6/132682905/timolutukujavij_zejibuk_nepolemitine.pdfIn PDF document text
    • http://ragug.tanurhideboerne.com/uploads/1/3/1/0/131069806/4c77650871536fe.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/8ad6068c-b338-4a81-aa58-ea76adc43092/vukadinokisabu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5cdd03d-554f-462d-bed7-a3dd3614e206/xamojitiduseka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f8d60a5-e58a-462e-92ef-5e196fcf7094/peleda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/666ca7a8-eeaa-4d91-a2a7-7ee66053e3c1/lemogenuwofenu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b402763-f7cd-4d9d-a0c1-bf254ce30734/55087578481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5475/9065/files/15725377142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6442/9217/files/64598209221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2682/7422/files/70859064218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8878/2236/files/58259845640.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69ed0b67-093b-4424-b8ee-d1adb3896775/gekazusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa8e13a1-ed64-4f3c-b13c-4b1bc1329189/29386247893.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fd701c5-9668-47c8-ad91-29b17741c413/pavojenojelisezeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fcabe31-ae44-4ec3-932c-152fb707875b/92416656008.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3304e981-af19-4beb-bbf0-7e21dc39d84f/34329057163.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_off00006a6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6C 5700 bytes
SHA-256: fecf59552d7e141b3c601a7b1013acdfc926a3c264a9b25111c396a48ee8cc76
font_01_sfnt_off00007dca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCA 10364 bytes
SHA-256: 394330dd49dc470c3962e2831d996ad2eb1863d321a41921185bc850f4aa3edf

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