Malicious PDF — malware analysis report

Static analysis result for SHA-256 96f47920c0dbb91e…

MALICIOUS

PDF

33.1 KB Created: 2020-08-09 01:39:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac430bee44f0cabb88f86d06a142c131 SHA-1: 135cf32864e2c01f894239d3916e4aefe2ef0872 SHA-256: 96f47920c0dbb91e744a4266c98442471d0d865189912d5b53539ca74a783057
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary malicious redirector link to 'https://ttraff.com/pify?keyword=chava+novel+pdf+free+download'. This suggests the document is designed to lure users to malicious infrastructure under the guise of providing a free download. The ML classifier strongly supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=chava+novel+pdf+free+download
    • http://files.thecolorboxbymaria.com/uploads/1/3/0/7/130775435/kegusew.pdf
    • http://files.cailenfu.com/uploads/1/3/1/4/131437444/rutez_wubusaxofab_kajali_zuwogor.pdf
    • http://files.celinelaheurte.com/uploads/1/3/0/9/130969356/9200685.pdf
    • http://files.reedertranslation.com/uploads/1/3/2/6/132682868/rijuzik.pdf
    • https://cdn.shopify.com/s/files/1/0431/3759/7607/files/sipij.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/livuse.pdf
    • https://cdn.shopify.com/s/files/1/0438/9378/4728/files/77121944333.pdf
    • https://cdn.shopify.com/s/files/1/0437/4704/9623/files/autocad_14_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/57510155903.pdf
    • https://cdn.shopify.com/s/files/1/0433/6487/6444/files/physical_science_grade_10_textbook_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/7871/2472/files/lidola.pdf
    • https://cdn.shopify.com/s/files/1/0428/4183/3635/files/pedefefonituvimupodojin.pdf
    • https://cdn.shopify.com/s/files/1/0446/7176/2595/files/brucellosis_in_dairy_cattle.pdf
    • https://cdn.shopify.com/s/files/1/0430/8369/4247/files/characteristics_of_information_age.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004601.bin
9e891093b7a9fb58088ffa685a5442b27ef6dc9589e26f6c208d7daa97ece509		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4601 5008 bytes
font_01_sfnt_off0000571c.bin
b0da45f15006432a9ad6e1665d0bd6a7412ea3c3cd789ccc771914643c5f63f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x571C 9560 bytes

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