Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe09b3d1b1e5bc44…

MALICIOUS

PDF

35.4 KB Created: 2020-08-01 05:01:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 377133147b3fe4e527627b15ade42663 SHA-1: cd20771991b54b0e2be22b05bb6b61494ddb726a SHA-256: fe09b3d1b1e5bc44731d44e739b23fb5b3309586b9be4e881daa740642774c9d
128 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service (ttraff.com) which is associated with malicious activity. The document body text and a heuristic firing indicate the presence of a "download button" lure, specifically for a "beep sound effect". The PDF also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or distribution mechanism. The primary malicious link is https://ttraff.com/pify?keyword=beep+sound+effect+download.

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=beep+sound+effect+download
    • http://files.shellybroughtonart.com/uploads/1/3/1/6/131606397/fuvivin.pdf
    • http://files.giftofmaths.com/uploads/1/3/1/8/131872178/2ee08024b7b2.pdf
    • http://files.windyhilldoodles.com/uploads/1/3/1/4/131453969/detobemo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0436/1895/files/xuxevugilomajizovur.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0839/files/41599600308.pdf
    • https://cdn.shopify.com/s/files/1/0433/9354/8444/files/89234360112.pdf
    • https://cdn.shopify.com/s/files/1/0430/3706/5370/files/31235063497.pdf
    • https://cdn.shopify.com/s/files/1/0428/5592/3878/files/faliritikidamuxexikoko.pdf
    • https://cdn.shopify.com/s/files/1/0432/6191/9390/files/xipajiwutikefem.pdf
    • https://cdn.shopify.com/s/files/1/0429/7005/4805/files/xapudajatezunegunixutiduw.pdf
    • https://cdn.shopify.com/s/files/1/0435/1387/2548/files/padifasexubexuwanelu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/62269648843.pdf
    • https://cdn.shopify.com/s/files/1/0432/5572/6238/files/pomitomin.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/giranisufunopamu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0913/8075/files/49181594438.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92283418618.pdf
    • https://cdn.shopify.com/s/files/1/0429/3967/8886/files/42236963701.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_off00004d2c.bin
ca052452be8dad99db31f0bc94223227dc6e24acdc5cda3b4f96c51bd115298a
pdf-font-stream PDF embedded font (sfnt) at offset 0x4D2C 5196 bytes
font_01_sfnt_off00005f08.bin
fc7c9830e2ed7d119ba71c415e24603265e130449ce42d6f31898c3e5c8326a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F08 9844 bytes