Malicious PDF — malware analysis report

Static analysis result for SHA-256 b062d5116dbf5861…

MALICIOUS

PDF

46.4 KB Created: 2020-11-05 20:07:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 7ca61e14063d6397ed54c5c767d94c75 SHA-1: 82ef496ace7bd1f2b357a73f857956b64a8fed15 SHA-256: b062d5116dbf586193faa7a87bb2f81495d7d7d39b4941810231b809fcc05451
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://traffset.ru/aws?keyword=st+anne+mother+of+jesus PDF link annotation
    • https://vodexekuteb.weebly.com/uploads/1/3/0/7/130776001/lofofimatedekaka.pdfIn PDF document text
    • https://gonerogad.weebly.com/uploads/1/3/1/4/131438616/munov-kilagoz-bebokanida-buwaj.pdfIn PDF document text
    • https://pasuliwipo.weebly.com/uploads/1/3/1/4/131452824/e598e00ffde99e.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://s3.amazonaws.com/susopuzupure/83232143264.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/fidubokozepuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c11c582-3bd8-49b8-bac5-0a6a8fc0379a/1-2-3_magic_effective_discipline.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/interactive_physiology_2.0_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a476f88-cc8f-4516-b57b-99b257e303b2/purapilaked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77891c78-229c-487f-9830-5efef0c54178/jixenuregigadugo.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/sepux.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/perfect_viewer_cbz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B55 4988 bytes
SHA-256: fa0c8ce81759590cc05224780c4d5bcb6b0d3ab1c2475708ec2256bad1cf73fe
font_01_sfnt_off00007c13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C13 10168 bytes
SHA-256: e3c78c4efb3b4b4077ce3d0d36139836c8037f7b11d490ea9e64a32c0a582e9a
font_02_sfnt_off00009e9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E9A 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176