Malicious PDF — malware analysis report

Static analysis result for SHA-256 438f2b23d91b0a01…

MALICIOUS

PDF

48.1 KB Created: 2020-08-11 21:23:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94516dfb30e89b4338c3858640a8e89a SHA-1: fa76c1187ca41cc9d351017f60599d499ff821cd SHA-256: 438f2b23d91b0a01d020b07892b4daabf33fffd2f40d59f4217e6dc1f59b1075
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one identified as a known malicious redirector. The document body is heavily obfuscated but contains references to URLs that are part of a link farm. This suggests the primary purpose is to lure users to malicious sites, likely for phishing or malware delivery. No scripts were extracted from this sample.

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=d%25C3%25B6rte+hansen+altes+land+pdf
    • http://bibonofe.kelownacellrepair.com/uploads/1/3/1/6/131637728/nozawejepofetudog.pdf
    • http://files.badnbeaujolais.com/uploads/1/3/0/8/130874514/tixadaxaniruda.pdf
    • http://files.flatrivermassage.com/uploads/1/3/1/4/131452811/1794949.pdf
    • http://files.dianartist.com/uploads/1/3/0/7/130740490/davadobazal-xekalusovu-litab.pdf
    • http://files.tsacurlingclub.com/uploads/1/3/1/4/131452841/tuwufigurupinir-kawixokusuzu-jejipogaxuburi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2259/7800/files/texas_drivers_license_online_renewal.pdf
    • https://cdn.shopify.com/s/files/1/0432/8190/7870/files/wesirokabosaterapa.pdf
    • https://cdn.shopify.com/s/files/1/0430/8933/0330/files/.pdf
    • https://cdn.shopify.com/s/files/1/0434/0246/1351/files/how_to_redeem_a_steam_code.pdf
    • https://cdn.shopify.com/s/files/1/0440/8868/8790/files/93124371825.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/lozalosirefirunam.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8070/files/kaxoresovigegasavod.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97072231683.pdf
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/rarosaxofulofo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1809/9615/files/memegonavelawoburexo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gamawogedeveredu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3765/4178/files/wejizikedaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/7738/6918/files/16969648671.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_off00006d7f.bin
37c854fc0487003564786c74be113b7689960398e0aee65cdb3b9246585fe68b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7F 4896 bytes
font_01_sfnt_off00007e18.bin
7f916f0c636dab508d2accc1c888d6637a2babb298282f690bd79389866a635e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E18 11396 bytes
font_02_sfnt_off0000a31f.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xA31F 4324 bytes