Malicious PDF — malware analysis report

Static analysis result for SHA-256 599558f4b0fd7129…

MALICIOUS

PDF

36.2 KB Created: 2020-07-08 20:39:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-15
MD5: 5707ffb5a70ac42a15b99ce562e6caed SHA-1: d9901e1f91f662340415ba242cbd5c5ffaf0286e SHA-256: 599558f4b0fd7129f1f63cfb46e53aa352862f90863a9e257d7b60f1d969537a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a deceptive lure related to file conversion, which is a common tactic for phishing or malware delivery. It embeds numerous links, including one pointing to a known malicious redirector at 'ttraff.cc'. The heuristic firings confirm the presence of malicious redirector links and a large number of external PDF links, indicating a link farm designed to distribute malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive content and malicious URLs.

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/wb?keyword=convert%20pdf%20to%20word%20large%20files%20online%20free In PDF document text
    • http://files.divinesoulenergy.com/uploads/1/3/0/9/130969819/d55ccdadbe3c.pdfIn PDF document text
    • http://files.mdt-agilityability.com/uploads/1/3/0/8/130813646/d8e08e4b4ad9.pdfIn PDF document text
    • http://files.goodstuffprimaryresources.com/uploads/1/3/2/6/132681204/lamumolop.pdfIn PDF document text
    • http://files.trebor-ts.com/uploads/1/3/1/8/131871690/4fa93.pdfIn PDF document text
    • http://files.magiqatlas.com/uploads/1/3/0/8/130814513/zivatemurijupizowigi.pdfIn PDF document text
    • http://files.ewoutgroen.com/uploads/1/3/1/4/131454158/3307d272314a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://maturixox.files.wordpress.com/2020/06/jipudefawadunixabemize.pdfIn PDF document text
    • https://nilibijo.files.wordpress.com/2020/06/dezukepilevarananezu.pdfIn PDF document text
    • https://povodijagez.files.wordpress.com/2020/06/34119486216.pdfIn PDF document text
    • https://gijifibu.files.wordpress.com/2020/06/9235910010.pdfIn PDF document text
    • https://mawumobu.files.wordpress.com/2020/06/28864699234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lomapatigusobotatijizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tozonolemudafolafoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69440205977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65069223210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90379225571.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 8

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_off00005115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5115 5172 bytes
SHA-256: a571f0af61608f1e215d9ab1b67ea589a75e0739181594301e72b0ff3c851615
font_01_sfnt_off000062d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D2 9612 bytes
SHA-256: fa6f11cb9d7a74d6a776622b11b90ade840d35ba4f15e7822c05bed1c9d5b619

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