Malicious PDF — malware analysis report

Static analysis result for SHA-256 37f5fd097dd9606b…

MALICIOUS

PDF

43.9 KB Created: 2020-07-31 01:39:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c6dd78931b2d37a4da4520693aff6484 SHA-1: e17cd60d7bd889b4af4b9fe0eb724a4e4d5b0382 SHA-256: 37f5fd097dd9606bf6eb00d15484c53722488d07a8ce9661e1d30f71d5ac77a3
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to HTML links and PDF creation, aligning with the heuristic findings. 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=html+link+to+pdf+online In PDF document text
    • http://files.sweetboxbylaura.com/uploads/1/3/0/7/130776167/8986743.pdfIn PDF document text
    • http://files.greatpurpose.org/uploads/1/3/0/7/130739287/doxagigix.pdfIn PDF document text
    • http://files.discoveryroofing-oahu.com/uploads/1/3/1/8/131856380/6862220.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/1/0431/1000/6940/files/wawagemitekigetalasilubuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7792/7072/files/40352191117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6211/6008/files/tisetejinotafobazofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3130/files/welumotapolunemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4616/4897/files/gajazixakutinej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/91899443391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1003/0759/files/zixevuful.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3380/5471/files/58925154971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6663/0037/files/54099486093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4203/8182/files/xiredewelejupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4017/8333/files/68488524473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4167/7731/files/tovasojopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75130531250.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 4

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_off00006ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE2 4516 bytes
SHA-256: 9221bba8c324bd3befc5a98f20101146bc3e3bb19a190d47528733461b960669
font_01_sfnt_off00007e21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E21 10728 bytes
SHA-256: 387ac6639d243e3d532bca05b0f376b265ea4aca23d8380ee4fff122a7dd4a77

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