Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed1cc62b2a8974a2…

MALICIOUS

PDF

38.9 KB Created: 2020-08-14 16:57:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f285acd8e3a47a4b56ebd56ad55f72e0 SHA-1: 32e827e35dce56f748ab9971a8cc6e7f17d2db05 SHA-256: ed1cc62b2a8974a24c8edbf051ab215eeab47d41bea9c00f4c9b7df2229df28b
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. The primary malicious link, 'https://ttraff.ru/pify?keyword=the+global+competitiveness+report+2018+indonesia', is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated and contains embedded URLs, suggesting an attempt to lure users to external, potentially malicious, resources.

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=the+global+competitiveness+report+2018+indonesia In PDF document text
    • http://files.pippaspilatesstretch.com/uploads/1/3/2/8/132814241/rebiwogafamujoba.pdfIn PDF document text
    • http://files.yellowbroncocreations.com/uploads/1/3/1/8/131858661/dedojajiwutotusasejo.pdfIn PDF document text
    • http://files.theavocadocupboard.com/uploads/1/3/1/8/131856039/sepolam.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/1/0431/9110/7742/files/english_test_proficiency.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nudukesobiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8460/3801/files/zuvugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90379225571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3747/4472/files/wixisibamobel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3384/6175/files/5581977375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2190/9662/files/59866769691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6123/9192/files/abc_letter_writing_practice_book.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_off00005784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5784 6156 bytes
SHA-256: b0287d5ee3cb4b1039e3a86244913060a48a4c2d75fe4b5874d84a62f678c902
font_01_sfnt_off00006c55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C55 10104 bytes
SHA-256: 930ac8684d5d8206b69079ce2b93986c22c8df077a0d55b0ff779664ceda7dff

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