Malicious PDF — malware analysis report

Static analysis result for SHA-256 16791e287f1decb2…

MALICIOUS

PDF

41.2 KB Created: 2020-08-15 00:16:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9e5820a9d1fff38a15b81efea4f76d79 SHA-1: a051090267c1a38a3b8a70fd699a7123fc7f5f1a SHA-256: 16791e287f1decb2d617cc83465a1d96d84e05f9304fbd2602414a8f6d5fd021
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though obfuscated, includes the same malicious URL and benign Shopify links, suggesting a lure to a phishing or malware distribution site. 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.com/pify?keyword=balance+sheet+vs+income+statement+time In PDF document text
    • http://files.bespokecabinetworks.co.uk/uploads/1/3/2/7/132740399/2749473.pdfIn PDF document text
    • http://nopari.casa-julip.co.uk/uploads/1/3/0/8/130814761/tagowatidu-nemopunasazuba-timajolo-torut.pdfIn PDF document text
    • http://files.garagethirtysix.com/uploads/1/3/1/4/131438538/a587a66416.pdfIn PDF document text
    • http://dirimita.nationalroadchurchofchrist.org/uploads/1/3/0/9/130969329/b3b37c6b7e6acb.pdfIn PDF document text
    • http://files.banningchiropractic.com/uploads/1/3/1/0/131070161/rofoxopi.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/1/0431/6204/2532/files/4840950318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5986/3961/files/javelin_range_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4432/2978/files/sadufalazigafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9177/2063/files/40255701517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9610/5375/files/15766502002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5391/6065/files/calendario_2018_con_festivit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7751/5941/files/introduction_to_batch_file_programming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/9513978907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0350/9911/files/haynes_manual_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4749/2506/files/1376184108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6264/7192/files/add_text_into_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3838/1992/files/79780184090.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_off00006446.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6446 5052 bytes
SHA-256: c258038527e1cac0e316d3d9bb6178e44fe152e14cf620fab08626ca37df63d3
font_01_sfnt_off0000754d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x754D 10284 bytes
SHA-256: 3bde38e864d66aa8c0cfd404d3db5a455d89749b23245844dedae18543375a0e

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