Malicious PDF — malware analysis report

Static analysis result for SHA-256 99b9118cc7a1e9e0…

MALICIOUS

PDF

60.2 KB Created: 2020-08-19 16:41:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b37cb00ca3ba58daf9e6b7c9af1c97d SHA-1: 925abcfeb6781f357d8c7f91c1553f15916177ac SHA-256: 99b9118cc7a1e9e028f63e2c262945366edf54bdc0b888c01651224aa043e272
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=historia+liberalismo+pdf'. The document body, though heavily obfuscated, contains this URL, suggesting it's the intended destination. The presence of numerous links to seemingly legitimate PDFs hosted on Shopify suggests a link farm or SEO poisoning tactic to mask the malicious redirector.

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=historia+liberalismo+pdf
    • http://domejid.sergeypolstyanoy.com/uploads/1/3/0/7/130739433/9941281.pdf
    • http://files.meridianstats.com/uploads/1/3/0/7/130776393/kijalubebes.pdf
    • http://genoti.wickedladiesbeeco.com/uploads/1/3/2/7/132710494/pizokoxowuwugogefeki.pdf
    • https://cdn.shopify.com/s/files/1/0438/1114/3842/files/ambattur_industrial_estate_companies_list.pdf
    • https://cdn.shopify.com/s/files/1/0436/1977/8723/files/teoria_del_bienestar_social.pdf
    • https://cdn.shopify.com/s/files/1/0431/3926/8774/files/aneurisma_de_aorta_torcica.pdf
    • https://cdn.shopify.com/s/files/1/0439/5175/1336/files/william_shakespeare_romeo_and_juliet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0101/1611/files/19568992190.pdf
    • https://cdn.shopify.com/s/files/1/0446/6386/5497/files/arlington_ma_water_quality_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/8140/0469/files/vajugunowebinanibebaradi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5181/8903/files/sad_breakup_dp.pdf
    • https://cdn.shopify.com/s/files/1/0431/5712/7336/files/rozofoperuvigabogabirud.pdf
    • https://cdn.shopify.com/s/files/1/0429/8525/9159/files/2999570424.pdf
    • https://cdn.shopify.com/s/files/1/0428/2161/5772/files/al_quran_terjemahan_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/4858/2820/files/printable_letters_for_bulletin_board.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_off00009dce.bin
1810f12aec3711cf69e8a576ee1fb81d6e604e3dce79dabc44432358b7d55ad7
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DCE 4972 bytes
font_01_sfnt_off0000aea8.bin
87cb13ececd13c0a57ba8329cbc752b2cf1775292a4658bb6b77b123b9f53522
pdf-font-stream PDF embedded font (sfnt) at offset 0xAEA8 11572 bytes
font_02_sfnt_off0000d43a.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0xD43A 4324 bytes