Malicious PDF — malware analysis report

Static analysis result for SHA-256 d430f5f65be355a4…

MALICIOUS

PDF

60.0 KB Created: 2020-09-02 17:37:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b975e914cd3c31dd19118cb3ee261191 SHA-1: f183b0fd7cb39c3861d849fe84438152aeee94cb SHA-256: d430f5f65be355a4a817ffe679839a1fe1d44a9f51a458e6c7d773b34519ab62
136 Risk Score

Malware Insights

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

The PDF document contains a lure for downloading a WhatsApp application, which redirects to the malicious URL https://ttraff.me/wix. This URL is flagged as a known malicious redirector. The document also contains a large number of external PDF links, many of which point to benign content, suggesting a link farm or SEO poisoning attempt to drive traffic to the malicious redirector.

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.me/wix?keyword=whatsapp+baixar+aplicativo+android
    • https://cdn.shopify.com/s/files/1/0434/6436/0100/files/biblia_reina_valera_1960_descargar_gratis_en_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0437/6304/0413/files/allianz_sigorta_salk_sigortas_tazminat_talep_formu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/miller_bobcat_225g.pdf
    • https://static.usrfiles.com/ugd/49be48_aa05cff16fbe419badfdf50cb9615b66.pdf
    • https://static.usrfiles.com/ugd/b8c837_95c7f6ad57df4bddbf3a866824462b2a.pdf
    • https://static.usrfiles.com/ugd/b8c837_6dc7f39e312144e18ce24ed2f66e7f4e.pdf
    • https://static.usrfiles.com/ugd/eb4c03_6220034bf6774c109e229401a8ca2be8.pdf
    • https://static.usrfiles.com/ugd/345929_ace460ccd54942198680f0fa613c5597.pdf
    • https://static.usrfiles.com/ugd/e4a001_0de21d85ab0846e5884cee57d4641039.pdf
    • https://static.usrfiles.com/ugd/ad2ade_a66055b33e01459d93b1c93830e1ab20.pdf
    • https://static.usrfiles.com/ugd/33a16d_a0a98af69a3b47cb95df8defbd058f7d.pdf
    • https://cdn.shopify.com/s/files/1/0463/3385/3852/files/periodic_table_chart_image.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/acer_aspire_one_d250_android_specs.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_off0000a363.bin
b6f8ddfab85b8bad8d046f5c5d908fc026088e944e3510fe012b21f56ca44b6c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA363 5440 bytes
font_01_sfnt_off0000b5ea.bin
6371725a808cbf01b488d4fa2539eae1a96f43941354b376d3cb31e7dde3d9c1
pdf-font-stream PDF embedded font (sfnt) at offset 0xB5EA 14332 bytes