Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec9f1348934f1726…

MALICIOUS

PDF

48.1 KB Created: 2020-08-13 21:39:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9a520bd5c493ef64e81ef2dcbcc69eba SHA-1: a165299ec9195762aa999ad17c2f332a81bf4096 SHA-256: ec9f1348934f1726fc15a3c63e364a7dda9d778e6134bd8f85fbee08afd62703
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, indicative of an SEO link farm. The embedded URL `https://ttraff.ru/pify?keyword=mataji+aarti+video` is identified as a malicious redirector. The document body contains garbled text along with several URLs, further supporting the link farm and redirection attack pattern. No scripts were extracted from this sample.

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=mataji+aarti+video In PDF document text
    • http://files.seliasomething.com/uploads/1/3/0/7/130775108/526cac5e5c8.pdfIn PDF document text
    • http://files.almostsponsored.com/uploads/1/3/1/6/131637043/7163544.pdfIn PDF document text
    • http://files.northvalleyrideclub.com/uploads/1/3/0/7/130775228/rizetepi.pdfIn PDF document text
    • http://files.fultonjazzfest.com/uploads/1/3/1/3/131379639/68cedf38f34ea3a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6992/3740/files/hindu_baby_boy_names_starting_with_p.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zijuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5851/1522/files/eenadu_epaper_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/wajozipok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5221/2130/files/principios_de_quimica_atkins_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6982/3383/files/hedging_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5660/4070/files/dell_latitude_d620_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0199/3622/files/memuposupevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/lipid_profile_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3576/1567/files/38211014150.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 2

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_off0000588d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x588D 4748 bytes
SHA-256: 795ef97c1583507b3518498c7afdfff03b45a1c6e4be8163a1f4f192fc18c401
font_01_sfnt_off000068d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D2 10036 bytes
SHA-256: 5061dbf52a4891793739eee95d036e10abd8cbffbe1f4c87cb7b04d30b06b050
font_02_sfnt_off00008b36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B36 13044 bytes
SHA-256: 1df8748d27216e13ecb1b385af2714a8a5e0f3136441801a500ba73efeb5b648

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