Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2a8804732aa7b71…

MALICIOUS

PDF

60.0 KB Created: 2020-10-06 12:22:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 307cc816d7c3a4183fa083888ca988bc SHA-1: ed4d11916ae502b2a057382010f4cb50fc1867e7 SHA-256: f2a8804732aa7b71227fcc39114fcce66bd63a97740218fd1f0496987e7f846a
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://ggtraff.ru/strik?keyword=blaster+master+guide+wow In PDF document text
    • http://fevopenap.leticiamarteleto.org/uploads/1/3/1/3/131379256/2109606.pdfIn PDF document text
    • http://files.feedlocallystuartcommunity.com/uploads/1/3/1/4/131453416/d3c0fb2e.pdfIn PDF document text
    • http://files.vintagemarkets.net/uploads/1/3/2/7/132741241/4217bffd137bf3.pdfIn PDF document text
    • http://gedobemol.chasingtheink.com/uploads/1/3/1/4/131437462/0aec63f3.pdfIn PDF document text
    • http://kijopobo.kellymichellebaker.com/uploads/1/3/0/8/130874679/5673650.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://uploads.strikinglycdn.com/files/4a2c59d1-3f85-43c7-b156-c6d66788ca2e/deroruramazafesazozoxot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fb387c2-9b6c-4fd5-8a6b-5756e7f5ac13/vogexanutanivezefakadufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7618e1c7-5e2c-4fcb-9191-752bb16f74a6/lerutarununavomotebad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f59dfd7b-6fc7-4d00-8409-d81f889165a8/guzudubamobobavegogoxan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/general_chemistry_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9241/9757/files/mazexukivenam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7195/7911/files/6129908140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3838/9925/files/88756753922.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fced298d-cffc-463a-a4f2-df6c5982131d/50588628815.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e838b945-8f3f-44b8-8d85-9e692a7afe71/tebujixubalituliduzosana.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FAE 5064 bytes
SHA-256: fec69554e20033ce2f1a790894aa8b5081eb2900a716d74499f81caf26222121
font_01_sfnt_off0000b0f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0F8 10508 bytes
SHA-256: 780551aae1ef565b897a568380a931555dbda34496e765466317cad053ba75d7
font_02_sfnt_off0000d4da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4DA 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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