Malicious PDF — malware analysis report

Static analysis result for SHA-256 88953e0d4e9fdd23…

MALICIOUS

PDF

41.5 KB Created: 2020-08-01 02:56:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d4e3c911db856764c366ff6b9e541cd SHA-1: f44b150d94611624620394fdfc95f4b3cc0c098d SHA-256: 88953e0d4e9fdd23dee7092173f76ee131273d80725bbceafe1d35d94770be0e
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=auto-+tune+pro+crack'. This indicates a likely attempt to trick the user into downloading potentially malicious software, such as cracked applications. The document also contains a mass external PDF link farm, further supporting a malicious distribution or redirection scheme. No scripts were extracted, but the presence of a download button lure and numerous embedded URLs suggests a social engineering tactic.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=auto-+tune+pro+crack
    • http://files.fine-scalemodela.com/uploads/1/3/1/4/131410234/7ca383ace9a7.pdf
    • http://files.irene-vassos.com/uploads/1/3/2/7/132710603/64e66131c7013c.pdf
    • http://files.farmingdaleadultdaycare.org/uploads/1/3/1/3/131381976/napixox_sibixurazato_toritonajajo_risijamagufeg.pdf
    • http://files.stevesapontzis.com/uploads/1/3/1/4/131407106/detiw_zotutumurujotis_bukudi_zetenomeruxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/2869/2643/files/10801561727.pdf
    • https://cdn.shopify.com/s/files/1/0428/9832/5671/files/ver_peliculas_online_2017.pdf
    • https://cdn.shopify.com/s/files/1/0429/5848/7703/files/77796111308.pdf
    • https://cdn.shopify.com/s/files/1/0435/7645/9422/files/fobiziwas.pdf
    • https://cdn.shopify.com/s/files/1/0431/1495/4918/files/8_teams_round_robin.pdf
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/surewupitijuvidor.pdf
    • https://cdn.shopify.com/s/files/1/0431/0574/7095/files/bozesogut.pdf
    • https://cdn.shopify.com/s/files/1/0437/1959/0040/files/delitulif.pdf
    • https://cdn.shopify.com/s/files/1/0428/4396/3555/files/modomizepowozufuwarix.pdf
    • https://cdn.shopify.com/s/files/1/0435/2468/5975/files/41706402859.pdf
    • https://cdn.shopify.com/s/files/1/0431/5139/2922/files/28648586109.pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/jiripanobig.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_off000065c0.bin
f3eb7d97126f4bdfa292eda942bc6cdac58ba0f140297b5e297a4269cc11c437
pdf-font-stream PDF embedded font (sfnt) at offset 0x65C0 4804 bytes
font_01_sfnt_off00007632.bin
1a71e8c39804e2d11a9762c77c3d347998f67c52bf632318b12acc7fff4e37b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7632 10240 bytes