Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad5d2397a0eca213…

MALICIOUS

PDF

42.5 KB Created: 2020-08-21 19:24:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60ee36c95e60260027e090d025774a9a SHA-1: 0b418727170dad865bf79ceda43fae0ff6a233da SHA-256: ad5d2397a0eca2136928376d2dc40fbdd5156edd4e6cd5c878b2fb479aa2d54b
128 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.com/pify?keyword=bloons+td+6+apk+4.+0, is identified as a malicious redirector. The document also contains a visual download button lure, suggesting a social engineering tactic to trick users into clicking the malicious link. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or malware delivery attempt.

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.com/pify?keyword=bloons+td+6+apk+4.+0
    • http://popitet.halonades.com/uploads/1/3/0/7/130776886/88766bd.pdf
    • http://boxuv.emathacademy.com/uploads/1/3/0/7/130776445/1736911.pdf
    • http://files.tridentpest.com/uploads/1/3/0/9/130969356/zezapovi_zotavukibodi.pdf
    • http://files.donoharmcoalition.org/uploads/1/3/0/7/130775952/pomosi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2008/3612/files/lubafusazifalakarokoxete.pdf
    • https://cdn.shopify.com/s/files/1/0430/6527/8625/files/agonista_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/64342574508.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/air_camera_editor_app.pdf
    • https://cdn.shopify.com/s/files/1/0437/3420/4568/files/jebidapawogo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0787/7017/files/nudomevog.pdf
    • https://cdn.shopify.com/s/files/1/0437/1103/7589/files/burger_king_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/bombardier_dash_8_q400_flight_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/8553/6159/files/43364197287.pdf
    • https://cdn.shopify.com/s/files/1/0433/8922/3066/files/12292203117.pdf
    • https://cdn.shopify.com/s/files/1/0430/8166/2628/files/ginowodu.pdf
    • https://cdn.shopify.com/s/files/1/0435/7141/3151/files/from_hell_alan_moore_ita.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_off0000667d.bin
ef50a9e2b7440c619c764bf50ac4376904f34f55360c13b64ade9c8c3e93f726
pdf-font-stream PDF embedded font (sfnt) at offset 0x667D 5388 bytes
font_01_sfnt_off000078e4.bin
9ea73aca2ab6b0f5b93407ea84c58f991e1a814ce8f35926954b9892baf672f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x78E4 10768 bytes