Malicious PDF — malware analysis report

Static analysis result for SHA-256 6efee539fec58349…

MALICIOUS

PDF

42.3 KB Created: 2020-08-15 01:06:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df82f7b6b58489f5b526506d18e3c92f SHA-1: 4c77a2ceb048b9c3512ce7ca1fec453ce0d40bf8 SHA-256: 6efee539fec58349fa54b59d1bbd3497f7a692759fa5f3c05e116ff9804d367c
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector to 'ttraff.com', which is flagged as malicious. This suggests a phishing or scam attempt, likely using the 'bulk sms sender software free' lure to entice clicks. The document body, though heavily obfuscated, contains the same lure and references to the redirector URL. The presence of numerous external PDF links points to a link farm strategy to improve SEO or distribute malicious content.

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=bulk+sms+sender+software+free In PDF document text
    • http://files.chillicothefcg.org/uploads/1/3/1/4/131437005/1593706.pdfIn PDF document text
    • http://somenak.rockyforkcoc.com/uploads/1/3/1/3/131380284/sosesuvotebozudigej.pdfIn PDF document text
    • http://files.iwantmyjacketback.com/uploads/1/3/1/3/131379252/difobivug.pdfIn PDF document text
    • http://nelojesez.danishvillagekringle.com/uploads/1/3/0/8/130873995/bekudetewufabot.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/1/0431/9654/7230/files/42938770139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74832969368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5921/4501/files/88876281832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5608/4630/files/56579963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0720/3739/files/titenodip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9620/2661/files/grade_12_precalculus_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0697/6422/files/applications_of_gel_permeation_chromatography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/toraladomokipina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wurawosupamajo.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 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_off0000661b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x661B 5256 bytes
SHA-256: 33581bf713961398228934ca52a44ff06d3a8362bfbf819abeab4e8e0c40c056
font_01_sfnt_off000077f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F5 10664 bytes
SHA-256: 5c21eaf20deedc2fd05164af37c71e0a2f64d02fc3ab66d8778ba8d8a09e1436

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