Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c7f830735bb68e3…

MALICIOUS

PDF

62.5 KB Created: 2020-08-28 00:23:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78911b557c8e86f1e5ca8a7c23eafd2e SHA-1: c6f71f3a7518e8ecb51ac1e324283480965917f3 SHA-256: 1c7f830735bb68e3324117753bc9a3d6330e7de4aab7e94436e7a3d32517d4db
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one critical heuristic identifying it as a malicious redirector. The primary malicious URL, 'https://ttraff.ru/pify?keyword=original+sin+movie+download+in+dual', is designed to lure users with a fake movie download, likely leading to further malicious content. The document body, though heavily obfuscated, contains references to this URL and other benign-looking PDF links, suggesting a link farm strategy to obscure the malicious destination.

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.ru/pify?keyword=original+sin+movie+download+in+dual
    • http://momenaniw.galerieboisbrule.com/uploads/1/3/0/7/130776021/fuwefadarazu_surixerezeniko_lowanokuku.pdf
    • http://pubufata.clevelandschoolsfa.co.uk/uploads/1/3/1/8/131856772/4954613.pdf
    • http://files.theyogaofresonance.com/uploads/1/3/1/4/131453061/kufubibusu_koxixixopul_rozowom_gupibo.pdf
    • http://files.quillcbd.com/uploads/1/3/1/4/131452815/66ea1f.pdf
    • http://files.lolaandjack.com/uploads/1/3/0/7/130739648/xowomugit.pdf
    • http://urlin.us/1w4jjHowever
    • https://cdn.shopify.com/s/files/1/0434/7383/0040/files/age_of_empire_2_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0437/9348/1885/files/65289349212.pdf
    • https://cdn.shopify.com/s/files/1/0429/0042/2819/files/bewars_ringtones_com.pdf
    • https://cdn.shopify.com/s/files/1/0448/4648/1570/files/drop_down_menus_php.pdf
    • https://cdn.shopify.com/s/files/1/0431/8763/4338/files/android_studio_snackbar_background_color.pdf
    • https://cdn.shopify.com/s/files/1/0432/7954/8574/files/93317180360.pdf
    • https://cdn.shopify.com/s/files/1/0438/3745/6534/files/nolekofefo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/57714435275.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/the_veil_rpg.pdf
    • https://cdn.shopify.com/s/files/1/0438/5321/7942/files/84605656612.pdf
    • https://cdn.shopify.com/s/files/1/0444/3671/7735/files/57637044718.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000744c.bin
43159971d7058c5c2381fa2993c5ddab8880f77bd45e6c4b3ba95f625ada16c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x744C 10824 bytes
font_01_sfnt_off00009791.bin
d0a8b70cb8e2bff97380831a9176fb557e8603f5d238b5cfa924c1f6c89479d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9791 5324 bytes
font_02_sfnt_off0000a9a4.bin
8beb7c325214fa06dd0b6230f37e64990524e185aba45836a312d716b1971f6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9A4 14536 bytes
font_03_sfnt_off0000d6f7.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F7 16204 bytes

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