Malicious PDF — malware analysis report

Static analysis result for SHA-256 6febd3fe3a726440…

MALICIOUS

PDF

64.4 KB Created: 2020-08-20 23:30:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c5619a80e71a8ec71a8ac8f4689febd5 SHA-1: 5769658ae170202bd1994d41bc9a429aff4d40f2 SHA-256: 6febd3fe3a726440f514c0f35f66dfcdcf51dfbf6b9d2c3131d3410aa32f4c6b
162 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector to malicious infrastructure, disguised with movie-related keywords. The presence of numerous external links, including one pointing to a known malicious redirector, strongly suggests a phishing or malware distribution attempt. Although no scripts were extracted, the PDF structure and embedded links indicate a malicious workflow designed to trick users into downloading further 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=badlapur+full+movie++720p+worldfree4u
    • http://jodul.wuaaup.org/uploads/1/3/0/7/130739173/6825115.pdf
    • http://files.cindyhuntermorgan.com/uploads/1/3/1/4/131406606/1764b6c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0435/4693/5445/files/jefewiroj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kenetawibonilolususede.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/science_dictionary_english_to_marathi_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/jezukajalobijidibidetabo.pdf
    • https://cdn.shopify.com/s/files/1/0440/4376/3862/files/legion_alchemy_leveling_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/1538/9855/files/fukuzodidojidulaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9521/2697/files/aporofobia_adela_cortina.pdf
    • https://cdn.shopify.com/s/files/1/0434/7848/3096/files/17824999191.pdf
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/border_design_for_certificate.pdf
    • https://cdn.shopify.com/s/files/1/0440/6116/3670/files/asustor_as4002t.pdf
    • https://cdn.shopify.com/s/files/1/0437/3276/2785/files/94765206763.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_off0000afb4.bin
d5262faf46e327280cccf5ba1920a9fa5e7b238c424b73fed3f0b037eb754733		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFB4 5348 bytes
font_01_sfnt_off0000c204.bin
82255056958145b44ea61153be329fe44267adf769563dcbb1df628ae26af826		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC204 10636 bytes
font_02_sfnt_off0000e637.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE637 4324 bytes

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