Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ef45fe481d41b24…

MALICIOUS

PDF

41.3 KB Created: 2020-08-19 06:19:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e6a567a65b5654698e6bdda41f1ae5d SHA-1: 57f279c98b54ae150e016c60775a22376299c9df SHA-256: 2ef45fe481d41b24e7dd008d92e553c13c525d20f6182628cab30afd1d5a4c78
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=anexo+14+oaci+volumen+1+pdf', which is likely intended to redirect the user to a malicious site. The presence of a large number of external PDF links also suggests a link farm or SEO poisoning attempt to distribute malicious content.

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=anexo+14+oaci+volumen+1+pdf
    • http://zujilixig.theorlandorealtor.com/uploads/1/3/1/4/131408229/kujujunumijokev-gisov-redewivonoga.pdf
    • http://files.ismaakarate.co.uk/uploads/1/3/0/8/130873828/sezanoluvekubup.pdf
    • http://files.cacmun41.org/uploads/1/3/0/7/130776562/xajububika-zojixizukir-wezufal-doranakeperupe.pdf
    • http://kigokawuz.stfrancisxavier.org/uploads/1/3/1/3/131379894/jakax.pdf
    • http://jineligi.kantkollections.com/uploads/1/3/2/7/132740214/3190415.pdf
    • https://cdn.shopify.com/s/files/1/0441/2299/6888/files/ancestors_legacy_dlc.pdf
    • https://cdn.shopify.com/s/files/1/0437/9531/6896/files/ergonomie_d_un_site_web.pdf
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/crimson_dawn_of_peace_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0431/8419/3697/files/mofazegegovejejupokog.pdf
    • https://cdn.shopify.com/s/files/1/0433/9145/1303/files/ballade_pour_adeline_sheet_music_free_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0437/7175/6698/files/encyclopedic_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0431/9939/8052/files/zefotobivago.pdf
    • https://cdn.shopify.com/s/files/1/0433/8312/8214/files/logic_games_bible_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8357/files/najejedosexedafivedem.pdf
    • https://cdn.shopify.com/s/files/1/0435/3540/1111/files/ielts_placement_test.pdf
    • https://cdn.shopify.com/s/files/1/0448/4320/4765/files/71720249550.pdf
    • https://cdn.shopify.com/s/files/1/0438/0141/1744/files/nex_solo_guide.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_off00006216.bin
ebc9f9ef8a97c0987d5c87101b309eb61921d79a7992bb74cc0acb878572efa8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6216 5284 bytes
font_01_sfnt_off00007417.bin
5313c314e1fd027803fb6f3c65dc2ae09f6e729e7f90a1115e60f6629b5ef446
pdf-font-stream PDF embedded font (sfnt) at offset 0x7417 10616 bytes