Malicious PDF — malware analysis report

Static analysis result for SHA-256 b08984aa2c586fec…

MALICIOUS

PDF

47.7 KB Created: 2020-08-07 08:41:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 721f9b7e75e1cea219b5925f267a3bc2 SHA-1: 4083eb6f7563855a344dc26ac36cb77d31cd0971 SHA-256: b08984aa2c586fec9a8198a5f50f83027768394f99f36f864da91b211f9b6a5a
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One prominent link, 'https://ttraff.cc/pify?keyword=free+official+scrabble+dictionary+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing the lure. The presence of a link farm and a malicious redirector strongly suggests a phishing or malware distribution attempt.

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=free+official+scrabble+dictionary+pdf
    • http://files.aosfb.com/uploads/1/3/2/6/132680998/92f4176540713.pdf
    • http://files.ess-inc.com/uploads/1/3/0/7/130775633/terukipejaliw_wupuvudusimi_kezetisawotig.pdf
    • http://files.beautyclinicohio.com/uploads/1/3/1/6/131636602/nuzidi-nadekosutuz-vonisuxex.pdf
    • http://zekab.stjohngriffin.org/uploads/1/3/0/8/130814238/jijupo.pdf
    • http://files.lamuseartstudio.com/uploads/1/3/2/7/132740723/9423767.pdf
    • https://cdn.shopify.com/s/files/1/0430/1520/9123/files/hermione_granger_patronus.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/moxudenolaruxorurafugi.pdf
    • https://cdn.shopify.com/s/files/1/0440/5044/8549/files/sefolixuloparuwuledumu.pdf
    • https://cdn.shopify.com/s/files/1/0439/2475/0491/files/nejonogegemapalezezo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/zoweruzezu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8106/files/jovafebarufidez.pdf
    • https://cdn.shopify.com/s/files/1/0433/8784/6806/files/97776915056.pdf
    • https://cdn.shopify.com/s/files/1/0436/6660/4182/files/charlotte_truck_driving_school.pdf
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/20935967934.pdf
    • https://cdn.shopify.com/s/files/1/0429/4790/3644/files/boy_scout_popcorn_order_form_2020.pdf
    • https://cdn.shopify.com/s/files/1/0440/5306/9974/files/pdf_acrobat_x_pro_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/futujabuwa.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_off00007013.bin
258ec166fa109399f05b7ef62e687910b05b27a146d0ecf81e4c1219b54bf1c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7013 5136 bytes
font_01_sfnt_off00008192.bin
84d4145176460125d92124e55bb9ef07876cb8968daa39216043dad3812d5834
pdf-font-stream PDF embedded font (sfnt) at offset 0x8192 9988 bytes
font_02_sfnt_off0000a3cb.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3CB 4324 bytes