Malicious PDF — malware analysis report

Static analysis result for SHA-256 52e9dbf694790d9d…

MALICIOUS

PDF

41.3 KB Created: 2020-08-19 22:14:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0978629b8a8d5d3d13362dbb5b1add0 SHA-1: 9a4b7c5c8f7496a70b817ff2a7ad4e2234b98a8d SHA-256: 52e9dbf694790d9df9e83ee570dd5ed7dc5fb9e5c64aacfb3f6bfa5e3c3b7a4f
194 Risk Score

Malware Insights

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

The PDF document contains multiple embedded links, with a primary redirector identified as https://ttraff.ru/pify?keyword=moustache+template+array. This suggests a phishing or link-farming attack designed to lead users to malicious content. 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.ru/pify?keyword=moustache+template+array In PDF document text
    • http://xojire.michaeljperkinsschool.org/uploads/1/3/1/4/131437626/035437631ecce9.pdfIn PDF document text
    • http://files.swannanoavet.com/uploads/1/3/1/6/131636914/f0762780fd.pdfIn PDF document text
    • http://files.makeupbybb.com/uploads/1/3/1/3/131381712/zinomezumajiwet_xamaminiwoxesus_radan_gekero.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/1/0429/9885/7891/files/nidufene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6335/2227/files/dum_biryani_film.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7258/4870/files/xefob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4727/3116/files/tavosinisipuxavuxapotota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1247/9382/files/31723469254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/1676/8923/files/2010_ford_fusion_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/makuzilivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9672/7957/files/oecd_crs_reporting_financial_institution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23083433767.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54B6 5280 bytes
SHA-256: a27773fe02e3cf7f554fac7baf38aebc2663acdb3e2eb1248cb634c61ccf8526
font_01_sfnt_off00006693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6693 16124 bytes
SHA-256: a6a1bdc83186b2d9d610073c054715386784b4b015d6b75f3095c8824c694419

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