Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d14684ee811a7cc…

MALICIOUS

PDF

44.8 KB Created: 2020-08-10 14:56:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cccac2834c97269624f4acd9956a95c8 SHA-1: f89cef35cf39451da71a7d75a4a6a199bd66ebf9 SHA-256: 4d14684ee811a7cc563fcb5874e9ad561fae32c14cf4baa3bfec7e04b0ce645a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a redirector, https://ttraff.cc/pify?keyword=descargar+antecedentes+disciplinarios+en+pdf, which is flagged as malicious. The document body and embedded links suggest a lure to download files, likely to trick users into visiting malicious sites or downloading further malware. The ML classifier strongly supports the malicious verdict.

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=descargar+antecedentes+disciplinarios+en+pdf
    • http://files.flippedoutscience.com/uploads/1/3/2/7/132740214/wawogof.pdf
    • http://files.blueprintorphan.com/uploads/1/3/2/6/132681690/6435653.pdf
    • http://wosekidud.kaylapongrac.com/uploads/1/3/2/8/132815002/414633.pdf
    • http://ruguvan.k2physiotherapy.ca/uploads/1/3/1/4/131437363/fedifo.pdf
    • http://files.colfaxmusicltd.com/uploads/1/3/1/3/131383318/3916325.pdf
    • https://cdn.shopify.com/s/files/1/0441/0851/3432/files/nike_brand_guidelines_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/5337/5897/files/89078549757.pdf
    • https://cdn.shopify.com/s/files/1/0432/5556/2398/files/28364690462.pdf
    • https://cdn.shopify.com/s/files/1/0428/7827/1641/files/punipil.pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8740/files/bcom_course_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0431/1567/5815/files/husqvarna_350_chainsaw_specs.pdf
    • https://cdn.shopify.com/s/files/1/0428/6336/2204/files/31762831807.pdf
    • https://cdn.shopify.com/s/files/1/0428/2574/4540/files/fejeguko.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/67282325837.pdf
    • https://cdn.shopify.com/s/files/1/0429/3525/5203/files/23352041262.pdf
    • https://cdn.shopify.com/s/files/1/0434/8733/0464/files/viluxijibeluzavumabojefo.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f99.bin
ffeb89eaad713c9717385028f79c9757067aafb2c2382ea8cbab0e6efe35a425		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F99 6744 bytes
font_01_sfnt_off00007081.bin
99d36f193f54f3907b004fa7f87c2e753cd1e83cf264ccb071c693f57d6f87fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7081 5320 bytes
font_02_sfnt_off000082a6.bin
08be076ec29627db26c193f0c6b01e6e2acd7e330f3fdcf6261337eb44b7280e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82A6 10784 bytes

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