Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2c379873719cbea…

MALICIOUS

PDF

40.2 KB Created: 2020-08-20 08:02:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 919968e91435a8f0a41491ba3a09b277 SHA-1: 800089070a9146b80a0ea87f4e5b578d937f5b49 SHA-256: e2c379873719cbea5b54b81bf03bae91f8dda9a04989d8d7b7976d94d6d32971
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This link is presented to the user as a download for 'blank clock worksheets printable', a common lure. The document also contains a PDF link farm, with many links pointing to Shopify domains, likely for SEO manipulation to improve the ranking of the malicious redirector. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=blank+clock+worksheets+printable In PDF document text
    • http://files.sierranevadastorytelling.org/uploads/1/3/1/6/131606901/jowuko.pdfIn PDF document text
    • http://files.kldsoccer.com/uploads/1/3/1/4/131409200/8486089.pdfIn PDF document text
    • http://files.carolinemfisher.com/uploads/1/3/2/6/132682731/a5d16a0062bfe3e.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/1/0434/0213/3671/files/bruno_mars_grenade_video_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9029/7507/files/38357209067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5413/5456/files/dragon_nest_level_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2717/7380/files/xotovatuwogofenekomikume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4567/4389/files/contact_energy_annual_report_2015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6214/0840/files/muzuzuvifubujilusitodun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/92422223803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/mumuzapewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5726/5305/files/18777985152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5553/8595/files/fabric_minecraft_mods.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 2

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_off00005ad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD4 5368 bytes
SHA-256: f9eff2eb6b84db72f93594d2b5f0f96fd40c39a3e3db3c5f3e0fab71d6f2479d
font_01_sfnt_off00006d1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D1A 11604 bytes
SHA-256: f740ddd91f7e34532eeac43186f53299bf7b4049558cd674bc6caa6aad369b6a

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