Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f783ff88514ffcc…

MALICIOUS

PDF

49.7 KB Created: 2020-08-14 11:41:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7754b35e3009648e53ce5fce4e9ee97e SHA-1: aa192c8b8d3583b1153a950883dc541c4e521bfd SHA-256: 2f783ff88514ffcc779915838189671c962888ceab0bdb099156c56e2a59e7be
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=corel+draw+x6+portable+kuyhaa'. This URL is presented within the document body, disguised as a download for 'Corel draw x6 portable kuyhaa', suggesting a social engineering lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely to obscure the malicious redirector.

Heuristics 3

  • 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 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=corel+draw+x6+portable+kuyhaa
    • http://files.wbmconference.net/uploads/1/3/0/7/130775762/busivubefe.pdf
    • http://files.madronahouseapothecary.com/uploads/1/3/0/7/130775519/2c65d2b7.pdf
    • http://files.theorchidroom.net/uploads/1/3/2/6/132682051/lujonibutix-sopujod-benakenevugabi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7102/0957/files/rimunoraverevabid.pdf
    • https://cdn.shopify.com/s/files/1/0432/4796/0232/files/rhapsody_of_realities_august_2020_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/9834/9471/files/megipena.pdf
    • https://cdn.shopify.com/s/files/1/0432/7522/3206/files/lifehouse_you_and_me_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0433/5907/6502/files/56454812556.pdf
    • https://cdn.shopify.com/s/files/1/0432/6244/3675/files/35926548139.pdf
    • https://cdn.shopify.com/s/files/1/0428/7784/5671/files/bncc_ensino_mdio_geografia.pdf
    • https://cdn.shopify.com/s/files/1/0432/0133/1360/files/86095988257.pdf
    • https://cdn.shopify.com/s/files/1/0449/5107/7032/files/wordpress_web_config.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vewurobafug.pdf
    • https://cdn.shopify.com/s/files/1/0428/7099/7151/files/wusasikorogozojuji.pdf
    • https://cdn.shopify.com/s/files/1/0431/5794/6530/files/rejudupavazizugota.pdf
    • https://cdn.shopify.com/s/files/1/0429/4619/9711/files/marlin_golden_39a.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
font_00_sfnt_off0000749d.bin
bb6b74cd34e5f56285cd96ab563215b16f5d393ec1c2600693261e7ed56d679d
pdf-font-stream PDF embedded font (sfnt) at offset 0x749D 5240 bytes
font_01_sfnt_off0000869f.bin
d0fed13f2b1fc1d0a94e8d219b0aebadc3024911f1da2bd6ce3fa9af338a7d40
pdf-font-stream PDF embedded font (sfnt) at offset 0x869F 10912 bytes
font_02_sfnt_off0000abb5.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xABB5 4324 bytes