Malicious PDF — malware analysis report

Static analysis result for SHA-256 fed683ac691d082d…

MALICIOUS

PDF

71.9 KB Created: 2021-02-24 15:49:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: dbbae4884a68803bb6650ec01f75a06c SHA-1: 6e0501ef75dc0ec573715d17d236bdf5223b8d3e SHA-256: fed683ac691d082d98b875d2e4bec9a4df614af9514852f0c814888517cc95a2
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://maypoin.ru/award?keyword=2010+ford+mustang+shelby+gt500+0-60 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4380545/normal_60039eef86ef2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449768/normal_60265b5017b89.pdfIn PDF document text
    • https://mewifebobonopad.weebly.com/uploads/1/3/4/6/134625165/zutupunupelup.pdfIn PDF document text
    • https://gebomatera.weebly.com/uploads/1/3/5/3/135396668/61563b2fb.pdfIn PDF document text
    • https://puwoposujol.weebly.com/uploads/1/3/0/9/130969317/zaxijomigilodiz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478387/normal_6020061389704.pdfIn PDF document text
    • https://dumaxenuwumav.weebly.com/uploads/1/3/3/9/133997891/jidonagupetagidoka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469353/normal_5fdcc9fd30a73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413368/normal_5fe84287d09a0.pdfIn PDF document text
    • http://brumbum2.xyz/monster_storm_2_mod_apk_unlimited_everythingprcmh.pdfIn PDF document text
    • https://vejikawotepux.weebly.com/uploads/1/3/4/8/134887167/1b4a6cb8a.pdfIn PDF document text
    • http://snatural.space/banuzoxevekuwikomonifopa9xvkp.pdfIn PDF document text
    • https://bemagage.weebly.com/uploads/1/3/4/5/134525224/8138394.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481671/normal_5fc56bc4736c7.pdfIn PDF document text
    • http://big-ita.space/dazok1iyns.pdfIn PDF document text
    • http://cocobeautybar.ca/vidmate_old_version_2._28_for_iphonewgc18.pdfIn PDF document text
    • http://br1.red/tamiya_tble-_02s_manualuzi4x.pdfIn PDF document text
    • https://fojojaroj.weebly.com/uploads/1/3/1/4/131453509/mixafajavevuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416918/normal_60136d6b8b1a1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zonivezada/post_impressionism_and_expressionism_similarities.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_off0000da21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA21 6104 bytes
SHA-256: f52d4d679348135d776775631a33b8a7b2b9468c964d023837412f34e987e37a
font_01_sfnt_off0000eed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED0 10428 bytes
SHA-256: f715d33605c84f25e2b83eff58b76f3c2b280665341d5c4e7b847a89aa24fc07

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