Malicious PDF — malware analysis report

Static analysis result for SHA-256 66c23009619fb7f6…

MALICIOUS

PDF

58.5 KB Created: 2020-08-17 10:38:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d2356fc0dd4e134bb505b358ee2ddc83 SHA-1: 397d205eb8c20a1b9fff8770295bd03f4c8b9842 SHA-256: 66c23009619fb7f66403ef1fcd00b2178cf0342930abd22d1333941c9d600153
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a malicious redirector and link farm, designed to host numerous external links. The primary redirector URL, 'https://ttraff.cc/pify?keyword=medical+dictionary+english+to+kannada+app', is directly referenced in the document body and heuristics, suggesting it's the intended lure. The ML classifier strongly supports the malicious nature of this PDF.

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=medical+dictionary+english+to+kannada+app In PDF document text
    • http://wazogaluw.tepoungamarae.org/uploads/1/3/1/4/131437462/tasotubaruzutab_bazipibixa_luxazuvewixavas_zotufanasifesa.pdfIn PDF document text
    • http://files.oregontruffleoil.com/uploads/1/3/1/6/131606127/e5d80cf21abec6.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/1/0437/9472/7074/files/la_cambiale_di_matrimonio_libretto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0163/3177/files/14941298793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7093/0600/files/motujojojunuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/73527421701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3599/8880/files/mutedetemopanet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/bulojosovave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6759/6184/files/xibokesofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/50853735302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/1778/5759/files/gestion_de_calidad_de_un_proyecto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/72522759425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6876/7907/files/aprilaire_thermostat_8476w_manual.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 1

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_off0000a16e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA16E 5504 bytes
SHA-256: d871a5bc62148829a88682bd5063403fae66fe38ed02cc5eb963780ce23f4379
font_01_sfnt_off0000b429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB429 12332 bytes
SHA-256: 97fed29425116afaaba72a8c795af2e9c2fcfd9fa902b8299e6acb44188ded0d

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