Malicious PDF — malware analysis report

Static analysis result for SHA-256 00c51f94e1d692e2…

MALICIOUS

PDF

40.1 KB Created: 2020-11-09 06:50:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 001bdd75d0136cc66d227b1c94127498 SHA-1: a081a354a21640210fdf558b50001c10f23d0600 SHA-256: 00c51f94e1d692e2bae517c2b6b7a49c03759ff7e953f3f74c22450223101b68
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF link points directly to executable/archive payload critical PDF_DIRECT_PAYLOAD_LINK
    PDF contains a clickable HTTP(S) URI whose path ends in an executable, script, shortcut, disk image, or archive extension. Documents can legitimately link to installers, so this is a high-risk delivery indicator rather than a standalone exploit fingerprint.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffset.ru/aws?keyword=debcarlson28+hotmail.com+outlook.com In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370791/normal_5f9290f033771.pdfIn PDF document text
    • https://wojeribexojuxu.weebly.com/uploads/1/3/1/8/131856158/wonuvu-nufet.pdfIn PDF document text
    • https://getedizexagan.weebly.com/uploads/1/3/0/7/130740146/mujosudawutomu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392658/normal_5fa4c21804bb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392664/normal_5f8e4cddd46c8.pdfIn PDF document text
    • https://rafunegax.weebly.com/uploads/1/3/4/3/134350232/196ff9388913f.pdfIn PDF document text
    • https://besavikeneg.weebly.com/uploads/1/3/2/8/132815808/317427.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393349/normal_5f90df1fb9573.pdfIn PDF document text
    • https://liwevapazu.weebly.com/uploads/1/3/1/0/131071299/1315167.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475987/normal_5fa575be35eb7.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/cde514cd-361b-4634-b313-20860b346f12/78740024130.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea91784f-6e1e-4727-990d-b0b5329fd2ff/1319308516.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_off00005d8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D8E 5600 bytes
SHA-256: 715c0a81eef75c54f3d3e79080f2e7da50f0d2da097ce87780caea85f30ac63b
font_01_sfnt_off00007072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7072 10216 bytes
SHA-256: 8cd15d9c4402f3da6fa0863a75cdce06ff0b7687757e7ce362838095449ae6a9