Malicious PDF — malware analysis report

Static analysis result for SHA-256 2483c7d83ed915f2…

MALICIOUS

PDF

79.3 KB Created: 2020-09-08 23:47:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59024c789ba06992785fd88950e728da SHA-1: 7a89e55ec728d3b39a117115c5a0188e5ea83fa5 SHA-256: 2483c7d83ed915f2c870345b7cfcf1275feff5e71ff724dee83a7731e5a53978
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.cc/wix?keyword=business+process+reengineering+advantages+and+disadvantages+pdf'. The document body, though heavily obfuscated, contains similar text, suggesting a lure. The presence of a large number of external PDF links also indicates a link farm, likely for SEO poisoning or to distribute further malicious content. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/wix?keyword=business+process+reengineering+advantages+and+disadvantages+pdf
    • https://cdn.shopify.com/s/files/1/0457/3672/2588/files/the_book_of_imaginary_beings.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63529720688.pdf
    • https://cdn.shopify.com/s/files/1/0429/9918/5561/files/kefajez.pdf
    • https://static.usrfiles.com/ugd/f1d680_eb02895f668a481fbc2b1a2627a8e634.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf1211828fd346e0962d8d01b83deb79.pdf
    • https://static.usrfiles.com/ugd/99a8f2_ef6a81df577a46ba836a7832fc10c634.pdf
    • https://static.usrfiles.com/ugd/8ff694_84cf5a634a1d4c7bbb4147be210221ed.pdf
    • https://static.usrfiles.com/ugd/a4c1fa_daa25d67087643a19487c87063a15871.pdf
    • https://static.usrfiles.com/ugd/f17c08_1f0f805d532e428c9b4c757002c14c2e.pdf
    • https://static.usrfiles.com/ugd/44b221_9f7e87805ace43ea9ba6351850501449.pdf
    • https://static.usrfiles.com/ugd/a8ca0f_06ccac5f2146474cb72d8ebfad178512.pdf
    • https://static.usrfiles.com/ugd/8c0e65_8799fc96aff64673a659e6f710decee1.pdf
    • https://static.usrfiles.com/ugd/02beb7_526e409560d54e1594609e903f0fb793.pdf
    • https://static.usrfiles.com/ugd/77eba6_15419040604b4c3982a457363fca9bf4.pdf
    • https://static.usrfiles.com/ugd/7a13df_1cb9702a0a234d84a05ea5bf4e9e641a.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/
    • https://static.usrfiles.com/ugd/8ff694_84cf

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb53.bin
dd73441f0be31b52962f269220b91d90d0de73e5ab82c252d422f34ed26f97b1
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB53 5284 bytes
font_01_sfnt_off0000fd58.bin
863e37148521955998d43b6088544b7ffde691e5b6ab0f7e85e292996f7eda19
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD58 10560 bytes
font_02_sfnt_off00012142.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x12142 4324 bytes