Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ece97128dd912a6…

MALICIOUS

PDF

51.6 KB Created: 2020-10-14 23:35:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fde01963f504439dcd2f8bbbb0613e22 SHA-1: ac173b1c4b7d6eff30774da7acae734dfdf8b7ac SHA-256: 4ece97128dd912a67ff8514c493474175ed0f1203f23cabc6fff88cb61ffb514
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/pify?keyword=free+travel+guide+to+london In PDF document text
    • https://site-1037900.mozfiles.com/files/1037900/soratabol.pdfIn PDF document text
    • https://site-1037115.mozfiles.com/files/1037115/xekedilewaxipujewigaw.pdfIn PDF document text
    • https://site-1042349.mozfiles.com/files/1042349/1147056527.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f875d5a30d63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f86f63ed3962.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_5f872e6ce3d2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_5f86f4fd927d8.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/velowo_dakemolaku.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/08e194ef7696ae.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/nimemoroligamaj-tafixidupara.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/8d113dbc76e.pdfIn PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/9926630.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/8925184.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/aa94aa7f99c.pdfIn PDF document text
    • https://site-1048168.mozfiles.com/files/1048168/wokagupobaxaxeji.pdfIn PDF document text
    • https://site-1039514.mozfiles.com/files/1039514/92271450704.pdfIn PDF document text
    • https://site-1038952.mozfiles.com/files/1038952/kefoxan.pdfIn PDF document text
    • https://site-1036702.mozfiles.com/files/1036702/68828971593.pdfIn PDF document text
    • https://site-1043599.mozfiles.com/files/1043599/93714598141.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/1/0435/0892/4568/files/91995744151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9231/1206/files/homescapes_hack_ios_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/3336/4133/files/master_mechanic_tools_reviews.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6249/1286/files/66661073494.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_off00008d8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D8A 4832 bytes
SHA-256: e54f54b40d96e7b40342f71f323aba4cf69b12fc1482504120634253ff751988
font_01_sfnt_off00009e09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E09 10120 bytes
SHA-256: b2321566add8e19c0705633d411a978f6a6b78bfc9483b459a8891ccdb314614

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