Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe9d17b7cb8745d5…

MALICIOUS

PDF

55.4 KB Created: 2020-08-20 02:29:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 32db8df491f784867f3c02ced12d1d3a SHA-1: 6b8e65644e3afa8b15dc27d67ae58b809875db99 SHA-256: fe9d17b7cb8745d5076881ebb9adec1b93117c331a942e99c50bdf69852508fe
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with a primary URL pointing to a known malicious redirector. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the malicious URL and several other URLs that appear to be part of a link farm, likely for SEO poisoning or to host further malicious content. The primary malicious URL is https://ttraff.ru/pify?keyword=chinese+characters+stroke+order+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.ru/pify?keyword=chinese+characters+stroke+order+pdf In PDF document text
    • http://files.ameliasclosetfilm.com/uploads/1/3/0/7/130740530/pegufifegiv.pdfIn PDF document text
    • http://files.delaneyswiftart.com/uploads/1/3/1/1/131163774/c87d5d4c0.pdfIn PDF document text
    • http://files.bgofalaska.com/uploads/1/3/2/3/132302963/2983338.pdfIn PDF document text
    • http://gususemu.imaginechildrensretreat.ca/uploads/1/3/1/0/131070874/1170536.pdfIn PDF document text
    • http://files.theflourishsisterhood.com/uploads/1/3/1/3/131398156/95d18288fa830.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/1/0428/5458/0391/files/66349687238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4331/5102/files/44052072827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9348/1889/files/cuadernillo_de_vocales_para_imprimir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7273/1801/files/employment_news_odisha.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1844/5223/files/convert_utc_to_cst.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3495/8229/files/nudojiwedusenamuxadug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6302/4547/files/liruwiwokadinubedogosij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2273/6798/files/11967832203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9005/1221/files/34671951856.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_off00006505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6505 17016 bytes
SHA-256: 9f40f80708d0166343f50b647250f72a8c30205b24ecd7e7aed842f4c40b976a
font_01_sfnt_off00009b31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B31 5180 bytes
SHA-256: bc2bd4519c388525b16ea05daef2cfeeffb1c45d67251a11c639a377e2fe061c
font_02_sfnt_off0000acbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACBB 10692 bytes
SHA-256: ec16717a7709ddda508a2d0f8101bfcebe23cae372e989205b90c1632ac4eb69

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