Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d30b5ff905b7504…

MALICIOUS

PDF

113.8 KB Created: 2020-08-03 20:50:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c17c026eb5c40ecd68f97fac15c7d015 SHA-1: 6df76fd154c44e0ed85e5cf422be9c61c52b1e58 SHA-256: 5d30b5ff905b750479ac260192d5dada41163325c9cd71d01ba64e649e9c9687
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically `https://ttraff.ru/pify?keyword=augusto+comte+biografia+pdf`. This is indicative of a phishing or scam attempt, likely using a 'free download' lure as suggested by the SEO link farm heuristic. The ML classifier strongly supports the malicious verdict.

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=augusto+comte+biografia+pdf In PDF document text
    • http://files.lindarutledge.com/uploads/1/3/0/8/130815017/dumunowosanimap.pdfIn PDF document text
    • http://files.finestmakaticondo.com/uploads/1/3/1/4/131483249/luxerepad.pdfIn PDF document text
    • http://files.ukerepublic.shop/uploads/1/3/1/3/131384113/dotutetef_lowet_zepuz_budarizif.pdfIn PDF document text
    • http://files.yoder-bros.com/uploads/1/3/0/7/130775432/77a2a1c8532627b.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/1/0436/8682/2053/files/57441563918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niborenegukudokeregus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/jegelage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8475/8696/files/69713051288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2143/4005/files/57140706589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6132/1621/files/ant_video_downloader_chrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/6145054428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4016/7320/files/simple_java_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3755/6889/files/48599156557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1230/9670/files/12725878706.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 7

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_off00017f2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17F2F 5572 bytes
SHA-256: d89d17cc71419ce1d9fb37d4c0bf1679c1acc8561e2821bd305b38f734638e52
font_01_sfnt_off00019210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19210 11776 bytes
SHA-256: cdee8f463c4bbd387be0314e171fbb8a18c028548b0182e6116f2b21b25d58b0

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