Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff4a0dbcdb8f9502…

MALICIOUS

PDF

41.2 KB Created: 2020-08-05 08:24:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6294df98042c7e33f4b2cea17ef75cc3 SHA-1: 6e327fdd9f2fc2326eb91d6e26a99108b924e2bc SHA-256: ff4a0dbcdb8f9502f5b51160adf39d9afaae741021b4a9a88a195fa4431df352
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, with one pointing to a known malicious redirector service. This suggests the document is designed to lure users to malicious content through a chain of redirects. The presence of numerous Shopify links, some of which are benign, may be an attempt to blend in with legitimate content. No scripts were extracted, and the document body is heavily obfuscated, limiting further analysis of the payload.

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=blessing+and+honor+chords+pdf
    • http://files.mrscooley.net/uploads/1/3/0/8/130873838/bunugaxipaludu-zolupibizebutun-lajotidagafefa-sakilitup.pdf
    • http://files.ataraxiaphotography.com/uploads/1/3/1/4/131455883/jazozixure.pdf
    • http://files.cinnamonsbotanicals.com/uploads/1/3/0/8/130874582/gokasusibatab.pdf
    • http://files.mrsconnieholmanteacher.com/uploads/1/3/1/4/131409574/a5956e5d90b742.pdf
    • http://files.waltermade.com/uploads/1/3/2/8/132815008/refalutewazav-moganirozasu.pdf
    • https://cdn.shopify.com/s/files/1/0438/4443/6128/files/86174590258.pdf
    • https://cdn.shopify.com/s/files/1/0428/1306/3327/files/poviluduredorevunu.pdf
    • https://cdn.shopify.com/s/files/1/0435/7308/4319/files/utorrent_default_settings.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3901/files/47662770949.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2103/files/pukiguxokidutase.pdf
    • https://cdn.shopify.com/s/files/1/0438/2585/6669/files/noxenubababoliparafemoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/9489/9864/files/27658013166.pdf
    • https://cdn.shopify.com/s/files/1/0429/3446/8774/files/putarinipuwatomegip.pdf
    • https://cdn.shopify.com/s/files/1/0429/8250/6647/files/30783812262.pdf
    • https://cdn.shopify.com/s/files/1/0431/8760/1559/files/67880486896.pdf
    • https://cdn.shopify.com/s/files/1/0437/2925/6602/files/good_osu_skin_tails.pdf
    • https://cdn.shopify.com/s/files/1/0433/6350/0197/files/51706214229.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000554d.bin
3dae87b81bcf13cae09421347305a9e102dbbd9e275dbaee20ccd76aac13cd02
pdf-font-stream PDF embedded font (sfnt) at offset 0x554D 5468 bytes
font_01_sfnt_off000067e3.bin
2063ac5e9bb523521e9284137d50a471716d9c7805a566513385b66ff2c478d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x67E3 14548 bytes