Malicious PDF — malware analysis report

Static analysis result for SHA-256 02a79419957ee26a…

MALICIOUS

PDF

51.4 KB Created: 2020-07-13 00:05:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: c06f9dfc442d409e920c1ba1c386f394 SHA-1: 8191de7981b6be96ae6de2ecce51cd0b2bb843bc SHA-256: 02a79419957ee26a771730914c644758efbcc65e16437198d46dcbc724c396ea
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and an SEO link farm, pointing to a phishing or malware distribution scheme. The embedded URLs, such as 'https://ttraff.com/pify?keyword=military+working+dog+crates', are designed to redirect users to potentially harmful sites. The ML classifier strongly supports the malicious nature of this PDF.

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=military+working+dog+crates In PDF document text
    • http://files.atlancomarketinggroup.com/uploads/1/3/1/4/131437766/kirufezidi.pdfIn PDF document text
    • http://files.artlynchactingcoach.com/uploads/1/3/1/3/131380868/tagaxe.pdfIn PDF document text
    • http://files.gamcbd.com/uploads/1/3/0/8/130813063/rovoduxedoxozo_verogen_kepidofis_mexeneniratato.pdfIn PDF document text
    • http://files.equusourique.com/uploads/1/3/2/6/132682892/sexukowedup.pdfIn PDF document text
    • http://files.savethatdog.com/uploads/1/3/0/7/130739099/4209786.pdfIn PDF document text
    • http://files.loribeliharboyd.com/uploads/1/3/1/1/131164039/nepivulewozuju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://xefipun.files.wordpress.com/2020/06/73578658464.pdfIn PDF document text
    • https://dujafuxipad642303133.files.wordpress.com/2020/07/76620894177.pdfIn PDF document text
    • https://mojizidiz.files.wordpress.com/2020/07/limojefubuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20659662050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98908457197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2721/0144/files/sojujuzulijunubividasom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8570/8968/files/buvowotiragafanodovet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3949/7112/files/zopeperojakiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6288/5541/files/77961887712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6924/3549/files/xojevivotufozej.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off00007092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7092 5160 bytes
SHA-256: 8391203d5ad5ab5f687db8651ca2db6522e5c47d3a8f510ac84321273be6cd85
font_01_sfnt_off0000823e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x823E 10216 bytes
SHA-256: d3d204282d935418a3d3cc087a6251f9210421beb6cdc19b2e9405e18bf5d63a
font_02_sfnt_off0000a584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA584 17696 bytes
SHA-256: 782f9dd58c8d3a5dee4762fd2432065882cc38f011620ff24880c098294cf74a

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