Malicious PDF — malware analysis report

Static analysis result for SHA-256 e997e5b957a9de14…

MALICIOUS

PDF

41.0 KB Created: 2020-08-20 02:46:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cb344f53cdbb7f715468345fb63a2883 SHA-1: ffbf159ea62a54fb9c9883317a0876be216d3509 SHA-256: e997e5b957a9de141ed0834355cfbb2ab89897cdcb09565d8579f75b659f2307
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic firing indicates a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination. Another critical heuristic points to a PDF link farm hosted on Shopify, suggesting a tactic to artificially inflate search engine rankings. The document body contains garbled text along with the malicious redirector URL and several Shopify-hosted PDF links.

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.cc/pify?keyword=redshift+performance+benchmark In PDF document text
    • http://files.djfndctn.net/uploads/1/3/2/8/132814166/6592140.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/1/0434/9011/5736/files/40844796424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6982/3383/files/nedugeginasinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7511/6961/files/bsc_nursing_pgi_rohtak_application_form_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0633/6930/files/workplace_safety_inspection_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6099/2927/files/7127957423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6331/2533/files/93616081972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4942/6845/files/lightning_returns_garbs_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5936/3478/files/black_law_dictionary_4th_edition_free_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5178/6135/files/muzasedaxubakanopiwurotus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6806/2872/files/wubeziwojase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2650/4086/files/15427341894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/76334740831.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
🗂 Part of campaign: janethunter.com 6 samples

Related samples 3

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_off0000606a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606A 5572 bytes
SHA-256: 0a9b78a56186c50e1495f991cde65c05028d0b36e277511f24402908a3711749
font_01_sfnt_off00007337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7337 10652 bytes
SHA-256: 74f6afa3672a889fd2e032f610e5bad3cbe1238d465085cab3afa5704f3a092f

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