Malicious PDF — malware analysis report

Static analysis result for SHA-256 9518606f84138b7a…

MALICIOUS

PDF

37.8 KB Created: 2020-08-05 02:03:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0f5a5d4f3a0c2e3215d4ef5acf39cea SHA-1: 116598779b9e365ea1c2ffe3524542d9b91b4957 SHA-256: 9518606f84138b7a3a934ca124511d1bbdff3737e05673015e9b97ba83efc1e2
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a malicious payload. The document body, though heavily obfuscated, contains the same URL and references a 'biblia de estudio thompson pdf', suggesting a lure. The PDF also contains a large number of external links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=biblia+de+estudio+thompson+pdf
    • http://files.cfuwoshawaanddistrict.com/uploads/1/3/0/7/130739826/mezagagizixerawar.pdf
    • http://files.itismusictime.com/uploads/1/3/0/7/130775400/napuxivejafomusetom.pdf
    • http://files.chorusaustin.org/uploads/1/3/1/4/131453897/812e7c715ab.pdf
    • http://files.highlandschristianpreschool.org/uploads/1/3/0/8/130814340/63cdc095e8a.pdf
    • http://files.nahskeyclub.org/uploads/1/3/0/7/130740012/3047233.pdf
    • https://cdn.shopify.com/s/files/1/0433/3184/6296/files/wagexiromexuguwar.pdf
    • https://cdn.shopify.com/s/files/1/0438/8664/1304/files/nebibuzatoni.pdf
    • https://cdn.shopify.com/s/files/1/0430/9575/2858/files/pezutud.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/97182862067.pdf
    • https://cdn.shopify.com/s/files/1/0429/0668/1497/files/79356899957.pdf
    • https://cdn.shopify.com/s/files/1/0427/9874/3719/files/50302889958.pdf
    • https://cdn.shopify.com/s/files/1/0429/1385/7692/files/48820555440.pdf
    • https://cdn.shopify.com/s/files/1/0428/2286/0956/files/lasusakawo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67142307476.pdf
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/29459509711.pdf
    • https://cdn.shopify.com/s/files/1/0435/3343/5029/files/pipidaxake.pdf
    • https://cdn.shopify.com/s/files/1/0437/2178/5498/files/24170304862.pdf
    • https://cdn.shopify.com/s/files/1/0433/9279/4774/files/68818845941.pdf
    • https://cdn.shopify.com/s/files/1/0438/1586/2434/files/alabama_cdl_manual.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_off000047d1.bin
bad3c60ba214702a59fca59c7f5f4307506e5cb1d480a9b0fc45ea5718f3ffee
pdf-font-stream PDF embedded font (sfnt) at offset 0x47D1 5256 bytes
font_01_sfnt_off0000597e.bin
4e89b83400b4203d0d7841b69f8dc95ad1629cf52fe6d9711cff224e6a34b84f
pdf-font-stream PDF embedded font (sfnt) at offset 0x597E 10180 bytes
font_02_sfnt_off00007bb7.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB7 4324 bytes