Malicious PDF — malware analysis report

Static analysis result for SHA-256 efebf51f82945dc4…

MALICIOUS

PDF

39.7 KB Created: 2020-08-14 11:22:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fa1975026eff5f09035a690abd5c7dc SHA-1: e6f79597570e6128a86743ef9b94bbd2287a1b9b SHA-256: efebf51f82945dc4ef27f418c801b8c023f33d28f30feff427c0a5b0b8ad1e85
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=2010+buick+lacrosse+navigation+system+manual'. This URL is embedded within the document body, disguised as a car manual. The file also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The primary malicious link is likely intended to redirect the user to a phishing page or a malware download site.

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=2010+buick+lacrosse+navigation+system+manual
    • http://wetital.brookwoodpottery.com/uploads/1/3/1/3/131381428/9728139.pdf
    • http://files.woodcraftguildtasmaniainc.com/uploads/1/3/2/6/132680901/1463972.pdf
    • http://files.halfmanhalfcritic.com/uploads/1/3/1/3/131381881/0733760faa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0160/1444/files/65577806269.pdf
    • https://cdn.shopify.com/s/files/1/0446/4944/7587/files/maths_book_class_4_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/3343/4011/files/fisiologia_pancreas_exocrino.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/icao_annex_7_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xizujebekox.pdf
    • https://cdn.shopify.com/s/files/1/0434/4319/1969/files/21645064126.pdf
    • https://cdn.shopify.com/s/files/1/0447/0826/6137/files/49590568703.pdf
    • https://cdn.shopify.com/s/files/1/0434/0659/0104/files/tagelowuxijibelifof.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/telisupuf.pdf
    • https://cdn.shopify.com/s/files/1/0435/6282/7935/files/tufusajusap.pdf
    • https://cdn.shopify.com/s/files/1/0436/9488/2984/files/concepto_de_tanatologia_forense.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lonuxifipepi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9224/6685/files/gewabewezawevebibuvixuni.pdf
    • https://cdn.shopify.com/s/files/1/0437/0615/5173/files/w1aw_code_practice.pdf
    • https://cdn.shopify.com/s/files/1/0447/8792/5143/files/najumu.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_off00005bfb.bin
315415d7a178aeeec7c6a96c487401efe2b8ad3161242832aab3def5e0e3e58b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFB 5716 bytes
font_01_sfnt_off00006f5c.bin
707e59da745e07372145dd53a06852bf293f319a88b16cf0463d30bee5d61318
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F5C 10076 bytes