Malicious PDF — malware analysis report

Static analysis result for SHA-256 862e6a5f00d302a0…

MALICIOUS

PDF

80.6 KB Created: 2020-08-12 00:11:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0017b980a1eeb0d9c4f7e9d7871c18e SHA-1: 87a89b7143a068a6a367053aaa1e2250e9839333 SHA-256: 862e6a5f00d302a0a3a143c1faed261c4e11c4a72378f55d05f8811a010c482b
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains embedded JavaScript and links to a known malicious redirector, ttraff.cc. The document body and heuristics indicate a lure to download a 'synonym and antonym PDF', which is a common social engineering tactic. The embedded JavaScript and the redirector link suggest an attempt to deliver a second-stage payload or phish credentials.

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=list+of+synonyms+and+antonyms+with+urdu+meaning+pdf
    • http://files.pediatrictouch.com/uploads/1/3/0/8/130814749/bitoxulusazuxam.pdf
    • http://zebezaw.craigcommercialrealty.com/uploads/1/3/0/7/130740434/936fdd83.pdf
    • http://files.noahsacksteder.com/uploads/1/3/0/7/130738991/18d340dd4e.pdf
    • http://delidesob.adamgormley.com.au/uploads/1/3/1/8/131871390/0f64233f.pdf
    • https://cdn.shopify.com/s/files/1/0430/8202/3061/files/vakebef.pdf
    • https://cdn.shopify.com/s/files/1/0432/9524/4452/files/cambridge_dictionary_english_french.pdf
    • https://cdn.shopify.com/s/files/1/0436/7374/7609/files/lekotevirul.pdf
    • https://cdn.shopify.com/s/files/1/0430/5561/2058/files/57085429046.pdf
    • https://cdn.shopify.com/s/files/1/0429/8643/8807/files/32411756747.pdf
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/franchise_agreement_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/3127/2346/files/tubabamadewiteve.pdf
    • https://cdn.shopify.com/s/files/1/0439/1731/2152/files/46810034022.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4701/files/kepedagijagaganeziwoxa.pdf
    • https://cdn.shopify.com/s/files/1/0453/2230/5691/files/kufujixafaboz.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_005_off00010868.bin
afaca013b5a0e8b7007bb3abd8c31af3faa2feb74a3545f62008c22b6af46ffb
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x10868 14700 bytes
font_00_sfnt_off0000cb14.bin
ab2a5e863c1d92a65d1537a80c3aeb714292a79372c569603d0f08c96d06972f
pdf-font-stream PDF embedded font (sfnt) at offset 0xCB14 5556 bytes
font_01_sfnt_off0000dde2.bin
b2c9389d4e32be8ddb757af027d523739d26b6eb96e35459728c4f9d14fc49d3
pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE2 13416 bytes