Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecb24a0cdc4651e8…

MALICIOUS

PDF

46.7 KB Created: 2020-08-24 17:13:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2d194bd59d2b9071d436dcbaeb28db66 SHA-1: b52356661a7f2697b9fef5cc63e33ecfbb1c5b6b SHA-256: ecb24a0cdc4651e834a025851cd6ba4cf9aa8656f645eff4bff2e16a35c02681
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, many of which point to PDF files hosted on Shopify. One of these links, 'https://ttraff.ru/pify?keyword=lol+elise+guide+s8', is identified as a known malicious redirector. The document body contains garbled text but includes the same URL, suggesting an attempt to lure users to malicious content. The ML classifier also strongly indicated maliciousness.

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=lol+elise+guide+s8 In PDF document text
    • http://gokosuju.fiddlerofstrathspey.co.uk/uploads/1/3/1/4/131437601/7d50b4.pdfIn PDF document text
    • http://files.drsinyong.com/uploads/1/3/2/6/132682787/kolegepasima-pozez-bejaji.pdfIn PDF document text
    • http://files.youthmariachi.com/uploads/1/3/1/0/131070202/rabavazivinabug.pdfIn PDF document text
    • http://safesole.photosbysarahtucker.com/uploads/1/3/1/3/131379530/aa59611aef25e3.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/1/0432/9409/7576/files/makedonsko_devojce_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0401/0389/files/tyranids_7th_edition_codex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4017/7314/files/21321461720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0200/2584/files/89013706700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xidab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/83057816505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57955619809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2449/8343/files/engineering_mechanics_dynamics_11th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/professional_biodata_format_for_job.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2919/1066/files/divokasizidenajunideka.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 5

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_off00006b6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6D 4820 bytes
SHA-256: 5553a602e25f6e4238d5fd6786b904a0becd8a2a3051d0a505d78cb4acc59a09
font_01_sfnt_off00007be9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE9 16220 bytes
SHA-256: b5b64fb21380835e32de1cb93c49dc46e6f345ba719c6a4529d1961edebfc952

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