Malicious PDF — malware analysis report

Static analysis result for SHA-256 551ced7b3c882786…

MALICIOUS

PDF

46.1 KB Created: 2020-08-31 07:53:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4978f435a5735752a793e90dd582eaf5 SHA-1: e86d2b241aae78569fa4f4b5e13420453ed309b7 SHA-256: 551ced7b3c882786f55651a11205aa28f5f671becd523c72862cd5ed9d327fe7
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, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.ru/wix?keyword=alter+your+life+emmet+fox+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the same text as the malicious URL, suggesting a lure to a phishing or malware distribution 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/wix?keyword=alter+your+life+emmet+fox+pdf
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/wijobegikimupuweji.pdf
    • https://cdn.shopify.com/s/files/1/0431/5106/5243/files/rakitisozikafamipujadi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/57444773176.pdf
    • https://cdn.shopify.com/s/files/1/0438/0911/2226/files/sleepyclasses_sociology.pdf
    • https://cdn.shopify.com/s/files/1/0432/1312/7844/files/javascript_hash_function.pdf
    • https://cdn.shopify.com/s/files/1/0451/8277/9541/files/kuxire.pdf
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/tugiku.pdf
    • https://cdn.shopify.com/s/files/1/0436/0011/7928/files/96421420586.pdf
    • https://static.usrfiles.com/ugd/4b7290_0f28a48a171843a68b4738a23bb98a4d.pdf
    • https://static.usrfiles.com/ugd/b8c837_1194370f7fe24c9aae7dbc812492f2fd.pdf
    • https://static.usrfiles.com/ugd/b8c837_a46e307927524d7b918de77948ad4da4.pdf
    • https://static.usrfiles.com/ugd/b4a829_e6ea4a0fafb547ef890ebe220dfe8650.pdf
    • https://static.usrfiles.com/ugd/df4650_6225f0f1071d44df9d9f61635a7af57f.pdf
    • https://static.usrfiles.com/ugd/e2c250_a12a9e46ffe94c739ab3f31db7d487c3.pdf
    • https://static.usrfiles.com/ugd/7198c1_0fd3ff4ee1b545a4883fe21b282835a9.pdf
    • https://static.usrfiles.com/ugd/99965f_d0b9979962344a1f97d8ad45261497cf.pdf
    • https://static.usrfiles.com/ugd/b8c837_5f2b8e7dab6147c78548b4e5b26f0096.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_off000069f5.bin
bfaccdce43da67f1d15c9b136165066d202b7b8e0e485137147f4710833fc31c
pdf-font-stream PDF embedded font (sfnt) at offset 0x69F5 4736 bytes
font_01_sfnt_off00007a20.bin
4896fc931e670892e500dcea4a0354d7aa0484c1007724311c03a2d0f7f59eaa
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A20 10356 bytes
font_02_sfnt_off00009d76.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D76 4324 bytes