Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e6809038933899e…

MALICIOUS

PDF

51.6 KB Created: 2020-08-14 09:08:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0ee5dcc11545e7673262b55e42b289b9 SHA-1: f7210e787411255f536de6b884884a62821036a5 SHA-256: 4e6809038933899e4d85a1c08c358151824ce2b01b7fe1588d2d3fcbbfbc620e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external resources, including a known malicious redirector. The document body, though partially corrupted, includes the URL 'https://ttraff.com/wb?keyword=natural%20hazard%20and%20disaster%20management%20for%20class%209%20pdf', suggesting a lure related to academic material. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness.

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.com/wb?keyword=natural%20hazard%20and%20disaster%20management%20for%20class%209%20pdf In PDF document text
    • http://files.arfstrom.net/uploads/1/3/0/9/130969262/nowifuvav_dobob_xubole.pdfIn PDF document text
    • http://files.bizeecatz.com.au/uploads/1/3/1/6/131607063/6046243.pdfIn PDF document text
    • http://files.4izon.com/uploads/1/3/1/4/131407818/folatesomuju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/43491649533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0269/1743/files/latutujoxoruxupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4650/files/55540724767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6861/1998/files/aaron_burr_sir_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4660/6760/files/how_to_run_first_aid_from_recovery.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3353/4357/files/vefosusimetadutimadekuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/6533439853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0328/1571/files/endocrine_system_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0228/1633/files/waking_life_full_movie_720p.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 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4B 5628 bytes
SHA-256: d61446f2456de707bb7d10474d9827b582faa02d1c7f8a5e5464ccefab91451c
font_01_sfnt_off00008e46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E46 10844 bytes
SHA-256: 7f1c9a8910f21dae10239f49144a28f0d763df6f2746a58863a900d7e0c323e9
font_02_sfnt_off0000b356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB356 4324 bytes
SHA-256: 781b9fae2fb9201b4a05d2041fea553bb2973f1d011ab9c51e3326c72e342c60

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