Malicious PDF — malware analysis report

Static analysis result for SHA-256 96a36fd645d0fee9…

MALICIOUS

PDF

65.9 KB Created: 2020-07-30 13:31:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 891558686cc9f7b6a9afbfa640572cfb SHA-1: 660e0bff91f307eb8bbcc19f1deb5d39b7273a8f SHA-256: 96a36fd645d0fee97f706afcf163362156398795ee4309bdca565b51a7af3abc
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, identified as a link farm, designed to redirect users to malicious infrastructure. One such link, 'https://ttraff.cc/pify?keyword=baby+girl+names+in+tamil+hindu+pdf+format', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to baby names, likely serving as a lure. The primary attack pattern involves tricking users into clicking malicious links within the document.

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.cc/pify?keyword=baby+girl+names+in+tamil+hindu+pdf+format
    • http://files.tellmemo.eu/uploads/1/3/1/4/131482946/f4f0752b60b8506.pdf
    • http://files.sheilabalzer.com/uploads/1/3/1/4/131438809/tupuporag.pdf
    • http://files.mountainvalleygscamp.com/uploads/1/3/1/0/131070867/zekigew-buwedi-futode.pdf
    • http://files.offlimitsphotos.com/uploads/1/3/0/8/130814492/234cf.pdf
    • http://files.wkuprecollegepiano.com/uploads/1/3/1/4/131454165/2029689.pdf
    • http://files.mountainvalleygscamp.com/uploads/1/3/1/0/131070867/zekigew-buwedi-futod
    • https://cdn.shopify.com/s/files/1/0433/3823/6062/files/momefimoriso.pdf
    • https://cdn.shopify.com/s/files/1/0429/8558/6841/files/29079814029.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dewubi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7738/5892/files/34314868338.pdf
    • https://cdn.shopify.com/s/files/1/0439/8976/2206/files/xefefofa.pdf
    • https://cdn.shopify.com/s/files/1/0437/5350/4917/files/vanit.pdf
    • https://cdn.shopify.com/s/files/1/0436/0660/5987/files/zometesejajewo.pdf
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/97027694455.pdf
    • https://cdn.shopify.com/s/files/1/0434/4214/3397/files/vezorixevakavo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7236632937.pdf
    • https://cdn.shopify.com/s/files/1/0430/1147/3571/files/82917182339.pdf
    • https://cdn.shopify.com/s/files/1/0428/1470/1735/files/pozajemalejazikifo.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
stream_006_off0000b284.bin
0153e04b7ac8b7f5e1e1fea386d0c7d0d4482830774dc98002bc2fa1b21bc975
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB284 14988 bytes
font_00_sfnt_off00009f97.bin
270b16959f500ce565c53a8fa728a4a94fd8bf3d0348e2068eb6198c979dda95
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F97 5628 bytes
font_02_sfnt_off0000d80b.bin
1ba1398fdd3338ee246ddb9c9a5ce927775fc19ef126195a343d7ddb996eb482
pdf-font-stream PDF embedded font (sfnt) at offset 0xD80B 9880 bytes