Malicious PDF — malware analysis report

Static analysis result for SHA-256 05f0d091749bbb4c…

MALICIOUS

PDF

42.4 KB Created: 2020-10-16 07:13:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: dcab862bce6a430981fd04619f3c184c SHA-1: 33d4cf5e30476ae7372da2488e30f84b497a10d8 SHA-256: 05f0d091749bbb4cce96f5d3d6f3d08018cfa354fa7d533380205e77127c1ae2
134 Risk Score

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.
  • 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://cctraff.ru/strik?keyword=wwe+2k17+apk%252Bobb+download+revdl In PDF document text
    • https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/mutaribedusubu-xetuxisozepakit-xijaz-pivob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369784/normal_5f89065531198.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367283/normal_5f8757563e397.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369653/normal_5f886aaae1421.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365599/normal_5f89190da56ad.pdfIn PDF document text
    • https://site-1043562.mozfiles.com/files/1043562/25056826464.pdfIn PDF document text
    • https://site-1048215.mozfiles.com/files/1048215/46910007855.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/4a6e7b79-9e97-466b-bab9-b47e6a671753/xemutamobo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/556f3b5f-1963-43d4-907f-dfff21db1a0c/4355675493.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c514f12-3440-41b0-984f-a14f9e50fa3f/39461506068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0371/5489/files/vegojudiputib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2082/2939/files/26713883887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9209/0784/files/doxepamajene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a63eca8d-68ba-4806-a5a0-2773245928a0/visumozopokalagibovagan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db5cb2a1-50c8-423f-a487-1f8ba22bae94/5565926417.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79ada4b6-fcfe-48c5-811c-a1de1fbd16ca/64422647257.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb940fdb-4ace-4065-bb5d-1378b3faba60/8489930558.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_off000067b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B7 5408 bytes
SHA-256: 118c67c13836a8c95b309779773c80a00f0077fee56a82a7cc9e84a98409538d
font_01_sfnt_off00007a4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4D 10072 bytes
SHA-256: 741d572e6592f20908c744662432fd2811cbe521e0d7aa0d3ce0a95c5d27c089