Malicious PDF — malware analysis report

Static analysis result for SHA-256 84723d690cbad261…

MALICIOUS

PDF

66.9 KB Created: 2020-10-24 06:26:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-05
MD5: 643018bd5cbc743f8bd2dc7c5042ed57 SHA-1: 34603e807afbc7cbd06f42eb11347bab433fd3ba SHA-256: 84723d690cbad261b5498846c79ecbab6703f9b41ac664e3479563e1ac40eb0a
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=transgo+shift+kit+instructions+4l60e In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_5f8fc9dc3256f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375087/normal_5f8f748eabf35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372963/normal_5f8e8f737610a.pdfIn PDF document text
    • https://vedakevuvapi.weebly.com/uploads/1/3/4/0/134013486/9405682.pdfIn PDF document text
    • https://lotagixowila.weebly.com/uploads/1/3/1/1/131164100/gegetajuzixu_saralajewazamok_livaza.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/bijivapejoguxu_tejifasezazo.pdfIn PDF document text
    • https://nulakumoxuguv.weebly.com/uploads/1/3/1/8/131871970/toxanapatoz.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/ccna_200-_301_free.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/dazabaferewe.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/venovezanatodogakuwo.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/management_of_cardiac_arrhythmias.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/87904655124.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/zulivositetaw.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/kunetamimowilixenewimibiw.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/zapupokivuwikukoroka.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/biological_science_freeman.pdfIn PDF document text
    • https://xanuvomapimiv.weebly.com/uploads/1/3/4/3/134342034/06ab373f.pdfIn PDF document text
    • https://rukazoxet.weebly.com/uploads/1/3/4/0/134040508/9038190.pdfIn PDF document text
    • https://bafovulik.weebly.com/uploads/1/3/1/0/131070506/fifugo-xeguliweso.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000c117.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000c117.bin)
    • 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 extracted file (font_00_sfnt_off0000c117.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC117 5540 bytes
SHA-256: 2ea7170f1d8b2a59c81dbc24a9ccef2b145372b2778ae7213c0d2a6990b54f00
font_01_sfnt_off0000d3ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3ED 12104 bytes
SHA-256: c30565061ec957281e712e02becb2052e085d32be1b491640b8760ac55a97cac