Malicious PDF — malware analysis report

Static analysis result for SHA-256 c243403d0edb7d7e…

MALICIOUS

PDF

37.6 KB Created: 2020-07-31 22:56:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 947c3973ff64af915ecd9042e701daac SHA-1: d30cf20b4b8c290401141085d13b709cf88b1139 SHA-256: c243403d0edb7d7e1d45dcb5bb2ae643b033f9087232fdecf5793f5c280ed2fd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, identified as a link farm, with one prominent link pointing to a known malicious redirector. The document body text, though partially corrupted, includes the URL 'https://ttraff.ru/pify?keyword=call+me+lyrics+blondie', suggesting a lure to disguise the malicious intent. The primary goal appears to be directing users to potentially harmful external content through this extensive link farm.

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=call+me+lyrics+blondie In PDF document text
    • http://files.ucclatrobe.org/uploads/1/3/0/7/130739970/tetado.pdfIn PDF document text
    • http://files.kopou.org/uploads/1/3/2/7/132712661/4f862ddfc137.pdfIn PDF document text
    • http://files.vaweather.net/uploads/1/3/1/3/131381693/5037237.pdfIn PDF document text
    • http://files.summertimeaussies.com/uploads/1/3/1/4/131438069/dfa0e62357b7.pdfIn PDF document text
    • http://files.dreadzilla.com/uploads/1/3/0/7/130775400/norokakuzid-fefigexonopekum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3351/8489/files/27438711813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1828/8284/files/xezajotugidapadesek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1438/1980/files/25982417526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7602/6522/files/63273467519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4641/1167/files/zaxetojuvonamefizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/jebarinedujowikewarari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2681/5895/files/26443172747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6354/1917/files/ranugir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0864/7580/files/kekelejujowewatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93527538138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6353/3977/files/26750360223.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_off00004998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4998 5060 bytes
SHA-256: 27a848503ece089aee18b66183b0030be61dc1e1c0d38ecf8cc5332ca67d4d40
font_01_sfnt_off00005aa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA3 9604 bytes
SHA-256: 0fb2975bf03c52fd11f41e7ac4d1bc5af7cc683cf01cee90eb34ec0595ed9111
font_02_sfnt_off00007b71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B71 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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