Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b0bdd31dc2d49dc…

MALICIOUS

PDF

45.9 KB Created: 2020-08-16 22:01:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ae07603bdafd55945d2752e97d4851a SHA-1: 33c9c843deaf55152ea73ddbf8ab18fff82a8245 SHA-256: 1b0bdd31dc2d49dc2976c5758a5abde2e1b3ab4ef8086e2ec177ba446f1ad910
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, also contains the URL 'https://ttraff.com/pify?keyword=chocolate+truffle+cake+nutrition+information'. This suggests the primary purpose is to lure users into clicking malicious links, likely leading to phishing or malware download sites. The heuristic 'PDF_SEO_LINK_FARM' further indicates a large number of external links designed for SEO manipulation, which is a common tactic for distributing 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.com/pify?keyword=chocolate+truffle+cake+nutrition+information
    • http://files.julianoshea.com/uploads/1/3/1/4/131453807/jibumojexoje.pdf
    • http://files.cobbdaylily.com/uploads/1/3/1/4/131406258/wudevu_gimolebefunuz_fowefirefu.pdf
    • http://nutiribux.dentalcontact.ca/uploads/1/3/1/1/131164250/7be7ea.pdf
    • http://pukulaj.studyshed.org/uploads/1/3/1/4/131409926/fabusijelesi.pdf
    • http://bixokijuv.meadowbrookwellness.com/uploads/1/3/1/4/131409090/kivajevapuputineke.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11067845032.pdf
    • https://cdn.shopify.com/s/files/1/0434/5800/3096/files/3924227060.pdf
    • https://cdn.shopify.com/s/files/1/0437/6811/9448/files/48060985288.pdf
    • https://cdn.shopify.com/s/files/1/0435/7518/1471/files/suwarowonupiju.pdf
    • https://cdn.shopify.com/s/files/1/0450/7333/4424/files/beautiful_creatures_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/1338/9992/files/87418809502.pdf
    • https://cdn.shopify.com/s/files/1/0434/4633/7703/files/zemefiguzufut.pdf
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/21680386986.pdf
    • https://cdn.shopify.com/s/files/1/0432/2407/2349/files/phet_balancing_chemical_equations_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0449/5376/3999/files/56549089127.pdf
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/39425431389.pdf
    • https://cdn.shopify.com/s/files/1/0436/5054/7870/files/adelphoe_libro.pdf
    • https://cdn.shopify.com/s/files/1/0427/4785/5004/files/13267632386.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_off00005c92.bin
3a728f9fde98457570ea7f55c0080a8eb6b895eb0ee6316baefd828deae078ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C92 4912 bytes
font_01_sfnt_off00006d17.bin
d837056284d9eb4c646f912e2f14654aad19b88231f1e954419219900fdb9860
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D17 15228 bytes
font_02_sfnt_off00009c15.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C15 4324 bytes