Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0db51629fc6376a…

MALICIOUS

PDF

45.5 KB Created: 2020-08-12 01:44:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83dec6e03b380c1ef7e6129b5598d2ef SHA-1: e18ccbbcedc44e1e08b96fecfb5d0ae24ec43086 SHA-256: c0db51629fc6376a76b388e7e3fd84bc4affaee80a22e45eadadc8e7bdbfe37e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, https://ttraff.ru/pify?keyword=leadership+team+building+activities+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to 'leadership team building activities pdf' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise the malicious intent. The presence of numerous external links, including the malicious redirector, indicates a campaign focused on driving traffic to potentially harmful sites.

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.ru/pify?keyword=leadership+team+building+activities+pdf
    • http://files.casamia-berneny.com/uploads/1/3/1/6/131606968/vesiwopivavuwir.pdf
    • http://files.micapeace.com/uploads/1/3/1/1/131163718/5213936.pdf
    • http://files.littlefairygarden.com/uploads/1/3/1/8/131857626/rutitatibokidaxuliw.pdf
    • http://fogowi.azanow.org/uploads/1/3/1/6/131637016/murupibipu.pdf
    • http://fobavis.crystalpalmsrvpark.com/uploads/1/3/1/6/131637881/pevefakugusuxibu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5193/2056/files/71061115833.pdf
    • https://cdn.shopify.com/s/files/1/0430/0062/7363/files/ratesesitibagoviratuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22271122494.pdf
    • https://cdn.shopify.com/s/files/1/0434/7179/8424/files/benefits_of_fasting_in_islam.pdf
    • https://cdn.shopify.com/s/files/1/0429/8237/5577/files/lol_sejuani_build.pdf
    • https://cdn.shopify.com/s/files/1/0432/3033/1047/files/71461018877.pdf
    • https://cdn.shopify.com/s/files/1/0430/4817/3722/files/setuforepe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7881/9735/files/30679279276.pdf
    • https://cdn.shopify.com/s/files/1/0431/6646/6216/files/xapixagelejewixanapunati.pdf
    • https://cdn.shopify.com/s/files/1/0435/3074/8055/files/azerbaijan_history.pdf
    • https://cdn.shopify.com/s/files/1/0441/4518/0824/files/ayat_ayat_ruqyah_pengusir_jin_dan_sihir.pdf
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/19130173563.pdf
    • https://cdn.shopify.com/s/files/1/0433/6821/8780/files/1_to_10000_numbers_in_words_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0427/8131/1132/files/4049_datasheet.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_off00007346.bin
0bb50e2d2ead1b51b93d96bc089f84ed82d5850acac018774177eb60a5eaf753
pdf-font-stream PDF embedded font (sfnt) at offset 0x7346 5708 bytes
font_01_sfnt_off0000868c.bin
7ca1a5a06dbcc1ba817b1d72d349af084e3b1c26ebef5e89df5b97e820b2e776
pdf-font-stream PDF embedded font (sfnt) at offset 0x868C 10156 bytes