Malicious PDF — malware analysis report

Static analysis result for SHA-256 98e418bada725c1a…

MALICIOUS

PDF

59.7 KB Created: 2020-08-10 03:31:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: addc8a2f9b3c7773a47390b6afa815c6 SHA-1: 04dc4aad94bdae82122d9a12086b246138bcf9c3 SHA-256: 98e418bada725c1a7a992d0a7e72315731948747eb076b7894b92acbe394132c
150 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic firing indicating it is a link farm designed to redirect users. One of the primary links, 'https://ttraff.cc/pify?keyword=banalata+sen+poem+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The ML classifier strongly supports the malicious verdict.

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.cc/pify?keyword=banalata+sen+poem+pdf
    • http://tiwitulu.cyclingsportscenter.com/uploads/1/3/1/3/131383483/dejisedimo.pdf
    • http://files.agnetamlindh.se/uploads/1/3/1/4/131483955/lebidumo.pdf
    • http://dalil.wixparish.co.uk/uploads/1/3/1/6/131606289/vasoga-vidovowuvubu-wuzakaponavexe.pdf
    • http://files.olliatduke.org/uploads/1/3/2/7/132712530/8065555.pdf
    • https://cdn.shopify.com/s/files/1/0434/6911/1461/files/slam_by_walter_dean_meyers.pdf
    • https://cdn.shopify.com/s/files/1/0430/7874/6261/files/95078506663.pdf
    • https://cdn.shopify.com/s/files/1/0438/3762/0381/files/64229987836.pdf
    • https://cdn.shopify.com/s/files/1/0432/9255/7462/files/xurorit.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69143450337.pdf
    • https://cdn.shopify.com/s/files/1/0437/0078/1208/files/85791986486.pdf
    • https://cdn.shopify.com/s/files/1/0433/7899/9446/files/6290674059.pdf
    • https://cdn.shopify.com/s/files/1/0429/3197/8403/files/foreseeresults_com_sprouts.pdf
    • https://cdn.shopify.com/s/files/1/0444/2108/7398/files/organizational_buying_behaviour.pdf
    • https://cdn.shopify.com/s/files/1/0438/8922/9979/files/63644020499.pdf
    • https://cdn.shopify.com/s/files/1/0439/0099/3691/files/kevudez.pdf
    • https://cdn.shopify.com/s/files/1/0428/2286/0956/files/18953121864.pdf
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/ejercicios_de_enlaces_ionicos.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_off00007b09.bin
f191aabbe2de0645f45cce935c353b3700f8203dfbd8fd545f3262d30634cb7a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B09 5140 bytes
font_01_sfnt_off00008c77.bin
fe73d7b327df39c95c42728561504fefb1a5ea8d4e6c474f1457cbb5800a3afa
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C77 11984 bytes
font_02_sfnt_off0000b26e.bin
940dc95097e8e87d93e166a5c92b6871d411281a640251fb057e28f1ce41863f
pdf-font-stream PDF embedded font (sfnt) at offset 0xB26E 14748 bytes