Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1bcac0ee94e94ae…

MALICIOUS

PDF

48.8 KB Created: 2020-08-14 11:49:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e82718a1d5745da63eaec0e71d54c9e SHA-1: ae79b6facf4ef054d0062fb0abd26215494de8e7 SHA-256: e1bcac0ee94e94aee8b574fc3b82ad111cc44a1510f9518e8b8f8fedd6274102
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to manipulate search engine results, with one critical link pointing to a known malicious redirector at 'https://ttraff.cc/wb?keyword=pythagorean%20theorem%20converse%20and%20classifying%20triangles%20worksheet'. The document body, though heavily obfuscated, contains this URL and other benign-looking PDF links, suggesting a lure to a malicious site. No scripts were extracted from this sample.

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/wb?keyword=pythagorean%20theorem%20converse%20and%20classifying%20triangles%20worksheet
    • http://files.sandycreekparkdurhamnc.com/uploads/1/3/1/3/131384602/07f3a8fe186.pdf
    • http://files.delavinadesignsco.com/uploads/1/3/2/3/132302858/81a37b439294ec.pdf
    • http://naxeza.myfampow.com/uploads/1/3/1/8/131857631/d14bcd39ed42.pdf
    • http://simusozew.adilachocolaterie.com/uploads/1/3/0/7/130775448/fujepuv_mumapomenorijod_jawalo.pdf
    • https://cdn.shopify.com/s/files/1/0438/4659/8816/files/bhagavad_gita_chapter_14_slokas_in_sanskrit.pdf
    • https://cdn.shopify.com/s/files/1/0432/1358/6596/files/livro_epidemiologia_teoria_e_prtica_pereira.pdf
    • https://cdn.shopify.com/s/files/1/0437/6441/6661/files/center_stage_turn_it_up.pdf
    • https://cdn.shopify.com/s/files/1/0430/6737/5777/files/vuvejuwagajapaxirakogepi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/66160441519.pdf
    • https://cdn.shopify.com/s/files/1/0435/7970/3451/files/zuxojigok.pdf
    • https://cdn.shopify.com/s/files/1/0430/7084/9181/files/nelut.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/action_research_report_for_b._ed_students.pdf
    • https://cdn.shopify.com/s/files/1/0435/1423/2996/files/raneziditesomalit.pdf
    • https://cdn.shopify.com/s/files/1/0432/9875/0629/files/vexusobisiwulipoxexamu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2246/6727/files/alimentao_escolar_saudavel.pdf
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/gupuzarowel.pdf
    • https://cdn.shopify.com/s/files/1/0429/8702/8641/files/libro_el_poder_curativo_de_la_cabala_gratis.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_off00006923.bin
36769b5946494c35cce62861ba1c44310b5938b3c3e47ab0b8b25686c375b4a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6923 5756 bytes
font_01_sfnt_off00007c9d.bin
aee3864961b7831a9d7369fcae69c1b276e038e9109ddebf57f5870f03d35012
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C9D 10448 bytes
font_02_sfnt_off0000a0ae.bin
3199f89400cff69f220d1dcbb992273a20732fdc4e9e26340e605d961baec0f4
pdf-font-stream PDF embedded font (sfnt) at offset 0xA0AE 16100 bytes