Malicious PDF — malware analysis report

Static analysis result for SHA-256 10b55639181393a9…

MALICIOUS

PDF

44.4 KB Created: 2020-08-26 08:32:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0e9cf2399c61b60ed46625c3a41326bb SHA-1: e344a8b0977f24815fcd58a577b32f14f20db0ea SHA-256: 10b55639181393a9efea0ef1a21d17e768ae205e49585147cdb9d42391aaca4f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a deceptive title and numerous embedded links, with at least one pointing to known malicious redirector infrastructure. The document body and heuristics indicate a link farm strategy, likely intended to drive traffic to malicious sites for phishing or other malicious purposes. The ML classifier strongly supports the malicious verdict.

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.
  • 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://ttraff.me/pify?keyword=ghb+is+a+safe+alternative+to+steroids In PDF document text
    • http://files.pdxprays.com/uploads/1/3/0/7/130775635/fuvif-kipefofupuluke-noveguga-sorijebilewi.pdfIn PDF document text
    • http://files.segsprescue.org/uploads/1/3/2/6/132695551/fumeriluwanug.pdfIn PDF document text
    • http://porod.venetoreview.com/uploads/1/3/0/8/130814687/gudifiwowir.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/1/0439/0082/9848/files/faithful_pvp_texture_pack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1230/9671/files/jogok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4784/5021/files/ceramic_materials_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/phonics_worksheets_for_kindergarten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0866/3462/files/a_memory_of_light_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3374/7878/files/towexoviniluneduxijumatem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/bixler_3_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8164/6758/files/fsbo_madison_wi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/cechy_charakteru_angielski_wiczenia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0181/2904/files/caldeiro_azul_marcelo_gleiser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6245/2643/files/proceso_de_absorcion_de_nutrientes.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F1F 5260 bytes
SHA-256: 8b2dff366398dad5f0bad23f565cbd5e6628436bc55ba8293862011aa4fee37b
font_01_sfnt_off000080ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80FF 10352 bytes
SHA-256: c69b82fd34344c5c25cb9ed883e0b3bf3532a99b3b4c97dace6bdff32d9faf0b

Open this report in the interactive analyzer, or submit your own file for analysis.