Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ef32b3c82eae495…

MALICIOUS

PDF

39.7 KB Created: 2020-08-12 03:00:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24f8883a3ddff7c845c212ece7ec8223 SHA-1: 593a955a7fdc299ec34f130ae73bb88a153dbcfc SHA-256: 6ef32b3c82eae4951beda3017539504467d9dbc4430eb5391bb6807f5f3091da
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, which is a common tactic for distributing malware or leading users to phishing sites. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting an attempt to manipulate search engine results or distribute malicious content. The embedded URL 'https://ttraff.cc/pify?keyword=improving+public+policy+4th+edition+pdf+download' is the primary indicator of malicious intent, likely serving as a gateway to a secondary malicious payload.

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.
  • 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.
  • 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/pify?keyword=improving+public+policy+4th+edition+pdf+download
    • http://files.beautifulfacesbyerin.com/uploads/1/3/1/4/131453206/9810798.pdf
    • http://files.theamericanbeaner.com/uploads/1/3/0/8/130814226/3252967.pdf
    • http://files.degaband.net/uploads/1/3/1/8/131872105/84bdb0.pdf
    • http://files.rcdavis-tellinstories.com/uploads/1/3/1/3/131383624/ebc2656e5828c5.pdf
    • http://files.chandao.co.uk/uploads/1/3/0/8/130814902/bonapawujowi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/bhagavatam_story_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0431/8766/7103/files/jotuno.pdf
    • https://cdn.shopify.com/s/files/1/0436/9167/1705/files/vigabeberokav.pdf
    • https://cdn.shopify.com/s/files/1/0435/0361/6165/files/buxorolapexobepuxez.pdf
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/baverefivoxakiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/6031/3768/files/beowulf_roy_liuzza.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34707652888.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99744184538.pdf
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/pdf_alcoro_sagrado.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/21537974279.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c22.bin
cba2b407da5f1197684fe8c437478f5ab6f806a4fad806f479a23227d2fed04c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C22 5692 bytes
font_01_sfnt_off00005f5e.bin
6518e27d329eb97d7784aeef6d26f2077ee6fd074874a9ab9ba90f1987462a27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5E 10064 bytes
font_02_sfnt_off000081b8.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81B8 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.