Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9b70101fd21e91c…

MALICIOUS

PDF

48.6 KB Created: 2020-10-16 19:15:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4f6fe78bc38185177512f7c1583f6e03 SHA-1: 6c78118bac48ad76e67bfd82a7e7004f3dae8097 SHA-256: f9b70101fd21e91cc12fcecdf2a5a3ff6042b01faca5765c594df2eb62e9ada4
194 Risk Score

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.
  • 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://ttraff.com/pify?keyword=carrom+pool+hack+apk+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365628/normal_5f8705258e730.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367627/normal_5f883519753f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_5f872f3854d4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366351/normal_5f8981c6dc1e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370056/normal_5f88d95e2d059.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5f87eee973901.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369329/normal_5f8932d6d15dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369163/normal_5f88c451b5998.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365586/normal_5f876290e2a7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f87174c5a723.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366381/normal_5f874be78d4c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367624/normal_5f87670bc9d82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366969/normal_5f8742b7103a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_5f873c853775f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366400/normal_5f875202e8318.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366024/normal_5f86f66d5652a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_5f8737f26fa76.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/5466/4342/files/fusion_360_tutorial_youtube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9597/3276/files/moldes_para_manualidades_navideas_en_foami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1404/4827/files/46544315335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/4171/8950/files/91797809919.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f017900-27e7-4d49-92d3-1ec26447c39f/68028618036.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/113a9423-e3b6-437a-a871-524711369d34/61763024078.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e91926ca-5e70-4adc-a150-bf94599bd8d8/55930092595.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72af1387-6162-44fd-a6c5-d7c44bc52202/kenigazapoxawid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a13634b0-3ee5-403d-8950-aec8caaa67dc/31470677362.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_off00008001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8001 5104 bytes
SHA-256: b595cf64d28dfb6bee216067c8f8b5142683749e04e76ceaf4c9ffa8fe795e1d
font_01_sfnt_off00009132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9132 10384 bytes
SHA-256: 96f9fca79a54b976d8fd5f34c27da83d1e054c15acabb540eebb44d94a4aa7b5