Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f3b4fd097c29ece…

MALICIOUS

PDF

44.7 KB Created: 2020-10-18 06:41:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 69e226a72a681c1d74f14b5e0177438a SHA-1: 5d43fffb38d2f1d8d5cd793c0bc19a6e5007e840 SHA-256: 2f3b4fd097c29ece11dc578f495e72e32ead3550401e68c656ef512d6fa74252
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://ttraff.me/123?keyword=huawei+p9+launcher+apk+free+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372719/normal_5f8a1e88e6c63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368756/normal_5f8ae7db92ffe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367947/normal_5f8a7634f32ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367667/normal_5f874c7ed36a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f87895698741.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/nelitop-lerunolalikowu-gisawedutijifuf-mepaxinawewulex.pdfIn PDF document text
    • https://pimetagedipimop.weebly.com/uploads/1/3/1/6/131636886/3612395.pdfIn PDF document text
    • https://rozazokosu.weebly.com/uploads/1/3/0/8/130813972/8617757.pdfIn PDF document text
    • https://tunimesepet.weebly.com/uploads/1/3/1/4/131455680/sujafix.pdfIn PDF document text
    • https://wujibinofowe.weebly.com/uploads/1/3/1/3/131383737/5746973.pdfIn PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/62f6eb8a0c.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/zowoderazobuzagos.pdfIn PDF document text
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/7753583.pdfIn PDF document text
    • https://dujopoda.weebly.com/uploads/1/3/0/7/130739119/petujeme-befefasu-bijov.pdfIn PDF document text
    • https://xijonezamo.weebly.com/uploads/1/3/1/4/131407630/betujo_nigoj_kixazekulibebe.pdfIn PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/65e01348438.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/bagatazojiz_sidatasofugugor_sofaxazute_gureluf.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/1/0482/3076/0600/files/dodavem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9939/2674/files/the_girls_guide_to_depravity_tv_series_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3705/6415/files/fusion_hair_extension_placement_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8217/8979/files/zenoxut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5308/0991/files/68382256482.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_off00006f95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F95 5336 bytes
SHA-256: 891aa613f97ee22da1f9c2a9d399b27cf0e22f1af1396afc552956f20df1cbfb
font_01_sfnt_off000081bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81BC 10392 bytes
SHA-256: 9b66147e2caf66728a84cefe98e86c860874ae2a43d34f64208b94f84ba72828