Malicious PDF — malware analysis report

Static analysis result for SHA-256 4566ef701c4ae790…

MALICIOUS

PDF

63.9 KB Created: 2020-08-03 12:10:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a59edd678499f8b8501f91699338c419 SHA-1: 733b66b76da3973f3ea5e1ecb4565f47fab27da2 SHA-256: 4566ef701c4ae7906458d05deb670cfda17a74137c4984c8bff97211b578b23f
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=monthly+gk+capsule+pdf+download, which is likely used to funnel victims to a phishing or malware distribution site. The document body, though heavily obfuscated, contains references to 'monthly gk capsule pdf download' and the authoring application 'wkhtmltopdf', suggesting a lure for potentially valuable content that redirects 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.ru/pify?keyword=monthly+gk+capsule+pdf+download In PDF document text
    • http://files.pontiaccc.com/uploads/1/3/0/9/130969077/82a5ebf1e4c1f5.pdfIn PDF document text
    • http://files.birgitschinke.com/uploads/1/3/1/3/131397934/kapumokujitusu_vawamudu_masok_musiwagesa.pdfIn PDF document text
    • http://files.dassiedahan-author.com/uploads/1/3/1/4/131436971/wixodasa.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/1/0430/3526/3130/files/12332885948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7571/4715/files/boxivoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2277/7496/files/66569819968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1535/6067/files/50918337835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2119/7724/files/zowoviminojozunesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0888/3870/files/85928254069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5020/4316/files/walabepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3467/3301/files/fojanotufobegaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8113/0394/files/32935951772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/xasasuvularelixeja.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off0000975a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x975A 5584 bytes
SHA-256: fa7335fb47f4dad12f082f144b2707dd937f6a4aa5c6e3ec03519844223a7a14
font_01_sfnt_off0000aa90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA90 16388 bytes
SHA-256: ce1e0860e02ccefd924dd69fa2b04629a4a5cc9f9b0b6163b78a3afb93db2f4a
font_02_sfnt_off0000dd60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD60 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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