Malicious PDF — malware analysis report

Static analysis result for SHA-256 97dddfaf76894e0e…

MALICIOUS

PDF

74.5 KB Created: 2021-01-01 16:48:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 7d5008b4becf1de4439f45de1617126b SHA-1: 63b5f6085a5fd0309282d56092259558b18aa9fc SHA-256: 97dddfaf76894e0ee47d4de9a850081268bff4215cc227d37ef51636e25ecf16
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains heuristics indicating it is part of a link farm designed to redirect users to external websites. One such URL, 'https://trafficel.ru/123?utm_term=honeywell+thermostat+manual+th6110d1021', is presented as a Honeywell thermostat manual, likely a lure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafficel.ru/123?utm_term=honeywell+thermostat+manual+th6110d1021 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368736/normal_5f91470804909.pdfIn PDF document text
    • https://larezonisu.weebly.com/uploads/1/3/0/7/130738889/zurinomakofiz-jatepagaket-dotedaguveful.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378381/normal_5f8f83ff258d6.pdfIn PDF document text
    • https://vukosigubew.weebly.com/uploads/1/3/4/8/134860762/delupebejimubokibub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365567/normal_5f9ff74b3bba3.pdfIn PDF document text
    • https://vixagudidiw.weebly.com/uploads/1/3/0/7/130775505/vudifive.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379500/normal_5fd9ce495ad15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460708/normal_5fd8b31bd471c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409236/normal_5f9dbf7e053fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457854/normal_5fc75cd587a64.pdfIn PDF document text
    • https://fulipevaxavu.weebly.com/uploads/1/3/2/6/132695351/e4e04ccb83ff3.pdfIn PDF document text
    • https://vebupanulaxufe.weebly.com/uploads/1/3/4/3/134393715/b2e4f1d9ec.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/jaloto/estimation_and_costing_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53f7159f-237e-4c26-b357-f840add3c25c/dokoberizoxipakas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e82e408f-c4dd-43ec-9b7b-e463ca37fa21/bobosigamudimowas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6509d9b3-4d3d-4dd2-a0ab-73c6810e64e0/66470035879.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_off0000e5a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A6 5700 bytes
SHA-256: 75d994520928ab3d72c72c7575f1e66adea4ee19c69b247aa2b0d97777c6c242
font_01_sfnt_off0000f8f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F3 10564 bytes
SHA-256: 1612b29a41c0cf4ef47e0f6854a7aede4de2614b43b60f07ba4c0764c0ad758d

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