Malicious PDF — malware analysis report

Static analysis result for SHA-256 39148fb517c9f800…

MALICIOUS

PDF

48.7 KB Created: 2020-08-09 14:55:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63ae19c26cc8583e7a92cace54e5f94b SHA-1: a9247eb4a9592eaa607e5c456f0e9ea1df9fb65d SHA-256: 39148fb517c9f8003e70636983c927976a40c8f261e1a1f0f60c408035234c1f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=justine+catalogue+august+2020+pdf'. The document body, though heavily obfuscated, contains this URL and appears to be a lure related to a 'Justine catalogue'. The presence of a link farm heuristic further suggests an attempt to distribute malicious content or engage in SEO poisoning. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.com/pify?keyword=justine+catalogue+august+2020+pdf In PDF document text
    • http://files.ksobha.com/uploads/1/3/0/7/130776406/bc0db6e2c5b1c.pdfIn PDF document text
    • http://files.soundofsilver.net/uploads/1/3/0/7/130739379/nudabuluzu.pdfIn PDF document text
    • http://files.threesistersgardens.com/uploads/1/3/1/4/131453062/5892548.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/1/0438/1478/1088/files/answer_sheet_50.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7085/7124/files/51925201573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/50707428953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/lurazesiboxavafubufudesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3791/7333/files/46196597651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/27902009773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/difewodamavorile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1659/1272/files/wokuvikunusifijusexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9833/9496/files/bankersadda_general_awareness_capsule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/manual_astronomie_clasa_12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/gs_convert_to_png.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68EA 5492 bytes
SHA-256: fefecee642cf9b88bae573cf944fdf15a2a23a5c208b89eb40fb163270c57e22
font_01_sfnt_off00007ba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA8 5544 bytes
SHA-256: 7ddf9ef5ca27ccbd28bd29df8ae8dea54120ca4f5b6f637bf81e5a66f820fcff
font_02_sfnt_off00008f61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F61 11260 bytes
SHA-256: 7539b34a39165d9a496dac1d4225fc9fa3c1244abd6ca2889f5642bbeca4d244

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