Malicious PDF — malware analysis report

Static analysis result for SHA-256 9478bca975f7fe42…

MALICIOUS

PDF

42.9 KB Created: 2020-10-25 15:00:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: bdc786a583db529761e722c378b2df18 SHA-1: 9fa00b53357c30d239dc4f0240d4d062bf3b219a SHA-256: 9478bca975f7fe4210f4480d416ac4471fdbd294b06eb6bd516732a11db87b2b
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/123?keyword=free+self+guided+walking+tour+liverpool In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f8f1c3a8ec9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379718/normal_5f90a60aa9cbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5f873e84dd964.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410952/normal_5f93a5ec4bf14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385038/normal_5f8f341623b29.pdfIn PDF document text
    • https://zizuralozirufu.weebly.com/uploads/1/3/1/4/131483034/1140852.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/jazulifevalosu.pdfIn PDF document text
    • https://finazodaxuvoj.weebly.com/uploads/1/3/2/6/132682535/de777a42efa44.pdfIn PDF document text
    • https://megeleju.weebly.com/uploads/1/3/4/3/134319984/1f29b0.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/xojajuv-mitegejitokuxig.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/130e4416-235e-4bb4-b934-d79066218c6d/medowireki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98854f8c-b487-47ee-a46a-cacede71c408/dressmaker_sewing_machine_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5043/4211/files/65149239962.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8406/3937/files/7873054038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/6762/8440/files/azure_devops_server_2020_cookbook_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8469/1094/files/shyamala_devi_dandakam_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8291/4723/files/35982292131.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c43f90db-f313-4d6a-a41e-af149fbf486e/51226335611.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c559e15-e737-44f0-9532-f13f273a12cd/sudutegefaxava.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eeb969ac-8f60-43e8-8f15-76e1d81b5d6f/papitu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/784a0e74-9fbf-4744-9af0-b83b3a38c493/wowipegapobudig.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_off0000688f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x688F 5380 bytes
SHA-256: 289e373588814f14421018e19c1e60aff343523c672f745cbb6a81b2ff9a594f
font_01_sfnt_off00007b0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0F 10548 bytes
SHA-256: 447cd74b97ebe90b5bd834c26880d2bf15cb01e5d49b3fd28e3c44693c580f46

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