Malicious PDF — malware analysis report

Static analysis result for SHA-256 739866d98e695742…

MALICIOUS

PDF

44.0 KB Created: 2020-11-03 05:10:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: eb43ae4aeac08fdff13d631b9d45abad SHA-1: 7c9a075346ad5390204a86342042b1274bd41efc SHA-256: 739866d98e695742006a3e7a919129f3345eb1b455605d1c0b71546985572d9a
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains embedded links that redirect to a known malicious infrastructure, specifically 'https://cctraff.ru/123?keyword=britney+spears+coca+cola'. This URL is flagged as a malicious redirector and is associated with SEO-based phishing lures. The document body, though heavily obfuscated, contains references to this URL and appears to be designed to entice users to click on it, likely leading to a phishing page or a malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://cctraff.ru/123?keyword=britney+spears+coca+cola In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369933/normal_5f8b950a6b00e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369163/normal_5f927c812d237.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387811/normal_5f9ec604a9a9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380229/normal_5f95de212b1a4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6934/1341/files/dideso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5057/3719/files/pagosa_springs_co_dining_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2241/8839/files/3642377709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/1882/9991/files/first_friends_2.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/tajeturepulonixetod.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/lisidalisibogazuwufa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/184cebc7-6879-460a-860d-5c072ba194c0/91707456860.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f2545e9-6e2f-49e0-a4af-93d30ecde8e7/ralevegoxomujaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/5273/3094/files/vevejemuzobovawosijiwuga.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/31332720139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60EB 4864 bytes
SHA-256: c80c15c9090b92bea678b22a5d5afcf14d61e8f011e205294640b3afdb14d75a
font_01_sfnt_off00007178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7178 10516 bytes
SHA-256: 083f0d2b4579a16f816f1ec5932b17a2fc29f4fba5fc52b1c32743e8785cc6af
font_02_sfnt_off0000953e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x953E 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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