Malicious PDF — malware analysis report

Static analysis result for SHA-256 3de46a7b330349b2…

MALICIOUS

PDF

49.4 KB Created: 2020-08-19 01:59:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6ad15bcfd7fb5008c8b90bfdf85bc19 SHA-1: 376eef0922f13256438d1cf8c1fcfedf5250943b SHA-256: 3de46a7b330349b285700a8909f4011e85d0688ef2823cdfe52371cccafc67ec
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links, https://ttraff.ru/pify?keyword=astrologers+day+pdf, is flagged as a known malicious redirector. This suggests the document is designed to lure users into clicking through these links, ultimately leading them to malicious content or phishing sites. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=astrologers+day+pdf
    • http://files.coreysnowden.com/uploads/1/3/1/4/131407802/nefemepowesobufi.pdf
    • http://keriwades.bayareareclaiming.org/uploads/1/3/1/1/131164243/7230206.pdf
    • http://files.mysclam.com/uploads/1/3/1/3/131379395/kerikejasof_lofatunumoguvu.pdf
    • http://files.honeymaice.com/uploads/1/3/0/8/130874058/tixezexozate_wobufaba.pdf
    • https://cdn.shopify.com/s/files/1/0435/8035/8811/files/ladowezalunufe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/waxigulazatep.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/datufezon.pdf
    • https://cdn.shopify.com/s/files/1/0431/7829/5450/files/donuminunezazasugesugar.pdf
    • https://cdn.shopify.com/s/files/1/0435/9880/7202/files/sevigilitabatogawifupasud.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/bk_nets_bleacher_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/5788/0996/files/vaaste_ja_bhi_du_female_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0436/3393/4496/files/sugoxivuru.pdf
    • https://cdn.shopify.com/s/files/1/0431/4044/8407/files/diffusion_mass_transfer_in_fluid_systems.pdf
    • https://cdn.shopify.com/s/files/1/0432/0886/8008/files/kokojavutito.pdf
    • https://cdn.shopify.com/s/files/1/0433/8620/8406/files/xitavudugan.pdf
    • https://cdn.shopify.com/s/files/1/0431/5788/0996/files/acidulantes_alimentarios.pdf
    • https://cdn.shopify.com/s/files/1/0432/0745/8975/files/vekagepudukut.pdf
    • https://cdn.shopify.com/s/files/1/0431/5450/5885/files/xupapazuwofibimile.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006778.bin
d02d7d7a5c7554427b2f7445bd259637be693a0880bbd8d7672b605db720a929		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6778 4932 bytes
font_01_sfnt_off0000785c.bin
14ca97433a085cfc231ef32b947953d90a479e796ca4ae8ac9efaf8774602af7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x785C 10076 bytes
font_02_sfnt_off00009ad3.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AD3 4324 bytes
font_03_sfnt_off0000a8d4.bin
393ebe790d0cae8fd280ff4bc457d4ffb1e0422257521f5c16942f74c81e3c02		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8D4 4180 bytes

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