Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c817ea2d4fee0b6…

MALICIOUS

PDF

58.2 KB Created: 2020-08-21 02:21:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05a5d15c36200e978ae043211b2a1141 SHA-1: 339a461a40e1450e6e7c618153ea01f4f572ecc7 SHA-256: 3c817ea2d4fee0b6184e3fee1cd0cca6dceff0707ebd24826b3e15eb107d73b1
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify-hosted PDFs, likely as a SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=are+you+human+too+ost+songs'. This suggests the document's primary purpose is to redirect users to malicious content, potentially disguised as a CAPTCHA or human verification prompt.

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.com/pify?keyword=are+you+human+too+ost+songs
    • http://files.johnmorrispiano.com/uploads/1/3/1/3/131384635/zelorawopizitose.pdf
    • http://files.rewalsarsponsorship.org/uploads/1/3/0/9/130969498/bipigi.pdf
    • http://files.michaelkressdesign.com/uploads/1/3/2/6/132680822/893b38a0b.pdf
    • http://files.michiganmidwife.com/uploads/1/3/1/8/131857916/371c6aa.pdf
    • https://cdn.shopify.com/s/files/1/0435/8212/8291/files/mosafajojosi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4756/8039/files/89291715457.pdf
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/52648694018.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9160/files/wovuvakuvasejo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5774/9917/files/autobiography_of_jose_rizal.pdf
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/allshare_pc_software.pdf
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/qualities_of_a_good_marketing_research_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9516/files/california_immunization_card.pdf
    • https://cdn.shopify.com/s/files/1/0431/4411/8428/files/34285783559.pdf
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/vobepegepigo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bijuwosozawubuvenokuzi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1238/2116/files/gokuwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9341/7367/files/35690397216.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_off000074a5.bin
9eda215a28ecf7d2bb5895f9d36c22dcc2d50cec7a07e3d5d66d64bf629179d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x74A5 12860 bytes
font_01_sfnt_off00009c53.bin
ae1fbb1d7d8c246b748829dd7b1dae15726b848beccd08a8caf986d982a7237e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C53 5156 bytes
font_02_sfnt_off0000adbb.bin
b72fa67a517377775969cda2cec20b766b160e73609940249d367d2dc475400f
pdf-font-stream PDF embedded font (sfnt) at offset 0xADBB 13652 bytes