Malicious PDF — malware analysis report

Static analysis result for SHA-256 a41382781f4fd3ef…

MALICIOUS

PDF

118.2 KB Created: 2020-08-14 17:08:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e29917dc4f709cf218aac60471f2b32 SHA-1: f39356c9b7940a8eeb6dee817e8770f6c849dc7e SHA-256: a41382781f4fd3ef338b60fc9d18bd0c80c92f5febd8d6e763770131ee22af3d
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=jurassic+park+movies+2018'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, some hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL. The presence of a low-severity heuristic for an urgency lure suggests the document is designed to prompt immediate user interaction with the malicious link.

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.
  • 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
  • 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=jurassic+park+movies+2018
    • http://sabuga.lansdownefarm.com.au/uploads/1/3/2/7/132741099/pasoruzomum.pdf
    • http://pibabo.heavensentchihuahua.com/uploads/1/3/1/1/131163635/fobekojewanurek-puduxizedo.pdf
    • http://xubupadu.renibickelyoga.com/uploads/1/3/1/1/131164250/fomurud.pdf
    • http://files.stevendupuisoil.com/uploads/1/3/1/6/131606349/lulaxiwisode.pdf
    • http://redof.cooklander.com/uploads/1/3/2/6/132681670/9055554.pdf
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/punizamufonawonenadazaval.pdf
    • https://cdn.shopify.com/s/files/1/0438/4935/1328/files/bhu_ba_sociology_syllabus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/6094/5305/files/homebrew_list_installed.pdf
    • https://cdn.shopify.com/s/files/1/0432/8521/7436/files/kepulerosadexakenav.pdf
    • https://cdn.shopify.com/s/files/1/0435/7462/4419/files/75092417712.pdf
    • https://cdn.shopify.com/s/files/1/0441/2047/3752/files/41330656347.pdf
    • https://cdn.shopify.com/s/files/1/0430/0288/8351/files/80806065490.pdf
    • https://cdn.shopify.com/s/files/1/0437/6153/3082/files/vabagi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2619/4333/files/biology_notes_for_class_11_chapter.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_off000190aa.bin
5472b2c2304a13d21d1069b347225bac86227e09ce8765395a9bf97fbeb4397a
pdf-font-stream PDF embedded font (sfnt) at offset 0x190AA 5680 bytes
font_01_sfnt_off0001a3f8.bin
e2ac55cae17c70a67a93ecbc4cf0b544c514f6116afb174616461a2504c85532
pdf-font-stream PDF embedded font (sfnt) at offset 0x1A3F8 11608 bytes