Malicious PDF — malware analysis report

Static analysis result for SHA-256 43c42b4d342d3707…

MALICIOUS

PDF

41.8 KB Created: 2020-08-28 03:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 486477bc30a852a16304813c277f69a1 SHA-1: 79ca2d3a79ca1f443adec0313c366f9cb35a1968 SHA-256: 43c42b4d342d37070a424d76904d33bdf73a92c23fe2bd6909fc46bf0118b347
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, a technique often used to create link farms for SEO manipulation or to obscure malicious destinations. One of the primary links points to a known malicious redirector, ttraff.com, which likely serves as a gateway to further malicious content. The document body itself is largely unreadable binary data, but the presence of the malicious redirector URL and the link farm heuristic strongly suggest a malicious intent to lure users to 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.com/pify?keyword=aritmetica+su+aprendizaje+y+ense%25C3%25B1anza
    • http://galisir.centroashe.org/uploads/1/3/0/7/130738973/dekutagevufalatulup.pdf
    • http://files.scoilmhuireknockraha.com/uploads/1/3/2/3/132302732/donopakowula_ritobebazi_valopadugex_molarulo.pdf
    • http://files.treesforhope.net/uploads/1/3/2/8/132814239/2631024.pdf
    • https://cdn.shopify.com/s/files/1/0435/2956/8408/files/82213506368.pdf
    • https://cdn.shopify.com/s/files/1/0437/7860/5210/files/southpaw_full_movie_dual_audio.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/text_messages_abbreviations_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0437/9069/6597/files/fallout_1_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/7333/9559/files/ipcc_report_2019_sea_level_rise.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6514/files/finding_slope_two_points_practice_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/9400/6177/files/naxen.pdf
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/adam_levine_lost_star_lagu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9760/2713/files/refopodijaxugekuxukok.pdf
    • https://cdn.shopify.com/s/files/1/0430/2825/0781/files/5950126401.pdf
    • https://cdn.shopify.com/s/files/1/0429/5039/4019/files/messenger_para_android_5._0.pdf
    • https://cdn.shopify.com/s/files/1/0440/7204/2661/files/michael_abrash_black_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/1471/6572/files/cert_basic_training_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62042090741.pdf
    • https://cdn.shopify.com/s/files/1/0450/0425/9492/files/information_technology_entrepreneurship_and_innovation.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_off0000617a.bin
130d68b474de6d216132f02f4fd492e5b4fb39e691a2094a467df2202975f9c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x617A 5616 bytes
font_01_sfnt_off00007448.bin
a5324de915e24bf9bba5185cfb4305bc6c53e6e07d25efbf87b46787fbc2b917
pdf-font-stream PDF embedded font (sfnt) at offset 0x7448 11028 bytes