Malicious PDF — malware analysis report

Static analysis result for SHA-256 16a7e96061131d93…

MALICIOUS

PDF

42.7 KB Created: 2020-08-02 21:09:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b05caf429788810c52b8c58caa0dd72f SHA-1: b0f1af6d1723f2867c8b55fbe5a3dd6cbd858dc9 SHA-256: 16a7e96061131d932c133669f1d49712145f3f66d3a18fcf605a66305910b512
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a malicious redirector, disguised as a 'Tanka poetry example'. The primary malicious URL, https://ttraff.cc/pify?keyword=tanka+poetry+example, is identified as a known malicious redirector. The document's structure and embedded links suggest a phishing or scam attempt to redirect users to malicious infrastructure.

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/pify?keyword=tanka+poetry+example In PDF document text
    • http://files.mygara.com/uploads/1/3/0/8/130874012/6b68104b96c90e.pdfIn PDF document text
    • http://files.my-bwk.com/uploads/1/3/1/1/131163564/998973.pdfIn PDF document text
    • http://files.devonpixies.com/uploads/1/3/1/8/131857650/jumavakurov_wopizuxonevi_nosadobi_gironuje.pdfIn PDF document text
    • http://files.teachamantofishhaiti.com/uploads/1/3/0/7/130740200/batonopova-wepefed-bimoni.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/1/0430/2805/4169/files/80836428919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/kuvapopetupegilifupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0958/8897/files/xedose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6847/9893/files/tewuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2905/4118/files/kexatujiwupuvubufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/jatukozijisikakugizumujad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6133/0598/files/tutorials_in_introductory_physics_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1390/6327/files/julusesexuxoxovupatino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9125/5713/files/namiruvebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9356/5342/files/zogemazojap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/91509412020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4141/5587/files/98144253933.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_off00006877.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6877 4972 bytes
SHA-256: 553de78fce77dd5dc3392f218e094a5a7cb8dd91ca126f5ad6e9e46652b017c6
font_01_sfnt_off0000795e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x795E 10760 bytes
SHA-256: 6e5bc38aed60d11beed400d20ae55b2e4d5d6b5a742e3ff50714e3f09f1abca3

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