Malicious PDF — malware analysis report

Static analysis result for SHA-256 85df97cf2dead906…

MALICIOUS

PDF

42.8 KB Created: 2020-08-12 06:20:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b665277b7e7ec4c3ee7ff269519695bf SHA-1: db59c360244a9950016244085bbe11c8bc27d1e9 SHA-256: 85df97cf2dead906700f080482e66ceabcaf2503d0be2ac9c0569b828613577c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a redirector URL associated with malicious activity. The document body itself contains the primary redirector URL, suggesting a phishing or scam attempt. 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.cc/wb?keyword=dermatitis%20symptoms%20merck%20manual In PDF document text
    • http://files.pemachenacu.com/uploads/1/3/0/8/130814588/gazafi.pdfIn PDF document text
    • http://files.chroniclesofdestiny.com/uploads/1/3/0/8/130813643/0c69dc128b9c63e.pdfIn PDF document text
    • http://bodoxota.eastcoastgermanspitz.com/uploads/1/3/2/8/132814930/wijif_bamegakabev_wotin_doxibosizesugu.pdfIn PDF document text
    • http://redozuze.drneilvanza.com/uploads/1/3/1/3/131380429/9114184.pdfIn PDF document text
    • http://files.artfullyfrosted.com/uploads/1/3/1/8/131871614/3c64de62661ea.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/1/0438/8818/1400/files/vifavemimogadepebuvumowaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4610/9341/files/viburawagogebikunariv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/lorakedezupevixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2283550224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9050/1020/files/biotecnologia_industrial_volume_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/18252207403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1574/0312/files/jobotazajilotunad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7781/9802/files/85160464810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5073/6533/files/obi_wan_midichlorian_count.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3745/6534/files/wakizazujivikanulejorig.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
🗂 Part of campaign: chroniclesofdestiny.com 3 samples

Related samples 8

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_off00006c56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C56 5244 bytes
SHA-256: 04f7eb4138a12663e9b97e4cda085a9bc6b8e5f98ab150888c05dc74c98a50f3
font_01_sfnt_off00007e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E24 9568 bytes
SHA-256: ab968643a68ebb94aee631fe61f5161d39b6276f0cdd38960d2fcdb10b1faaad

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