Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ad7ed4c9549bdb0…

MALICIOUS

PDF

64.8 KB Created: 2020-08-03 17:26:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 77ffc951e8d04e6ad2b3e49a3dcccd3e SHA-1: 54aa47145e3a984fcea56b62fc539e677e1e128f SHA-256: 4ad7ed4c9549bdb046306967323c63c4fe0f7ef5da66afaf4793e31c3b4af509
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in Systems

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure via the URL https://ttraff.com/pify?keyword=o+reilly+advanced+python+programming.+pdf. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution.

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=o+reilly+advanced+python+programming.+pdf In PDF document text
    • http://files.pacificfinishes.com/uploads/1/3/1/3/131380107/fiwasujawewod_rugimova_rameviwep_katasarufi.pdfIn PDF document text
    • http://files.phoebesmithceramics.com/uploads/1/3/0/7/130776852/5924525.pdfIn PDF document text
    • http://files.icanondemand.com/uploads/1/3/1/3/131379639/172adce8e84.pdfIn PDF document text
    • http://files.meccakorea.com/uploads/1/3/0/9/130970023/3977601.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/1/0430/3467/3301/files/10751129738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0532/9064/files/21888282719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4788/4699/files/64755415132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8273/5006/files/rumus_baxter_anak_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2906/1014/files/30420561883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7564/1247/files/gekegarijoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/how_to_compress_a_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/74655349960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3468/files/ziragu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2980/6759/files/20444979539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1497/8718/files/mewonewabolafugeme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4864/0418/files/71121046649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5989/5717/files/wezevisivixetagudabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0477/2000/files/denatejuk.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_off0000c09c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC09C 5612 bytes
SHA-256: 40ce19d076d061f89c5ba62de69023f4446bf7a023f7993aa85c7c79e801794f
font_01_sfnt_off0000d3a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A8 10096 bytes
SHA-256: eac1ea7a58ea2da155899b4e6416b8924f8e860e4d6e503e807a03a3df8cb22f

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