Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e658b6c300979a1…

MALICIOUS

PDF

40.6 KB Created: 2020-08-20 20:23:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c7a81aa934304a0738b82f5d7d8f569 SHA-1: 6300cae77022adf79d1a0d3fcc06c2c710a09b4f SHA-256: 4e658b6c300979a128e68ed5a2888f5e23f30b4d82a889f4c1521baefb2a7ae5
128 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body also contains this URL, alongside a call-to-action phrase, suggesting a lure for users to download software. The PDF also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The primary malicious link is 'https://ttraff.com/pify?keyword=hair+brush+photoshop+cc+free'.

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=hair+brush+photoshop+cc+free
    • http://files.jackandjillcharlottechapter.com/uploads/1/3/1/4/131455621/tawaf-kipusefu-wizebupipareda.pdf
    • http://fusudog.pickeringfarms.com/uploads/1/3/0/9/130969061/vivifilanipux.pdf
    • http://files.katharinedoughty.com/uploads/1/3/0/7/130739590/1854afe787b7068.pdf
    • http://gifutote.gannonjwattscounseling.com/uploads/1/3/0/8/130873715/foxoj.pdf
    • https://cdn.shopify.com/s/files/1/0434/8333/2773/files/adobe_premiere_pro_cc_tutorial_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0428/8764/3302/files/lisivopojudijuzukap.pdf
    • https://cdn.shopify.com/s/files/1/0433/9512/1319/files/purezurosubodob.pdf
    • https://cdn.shopify.com/s/files/1/0428/7417/5644/files/zukaxivesuwaded.pdf
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/49608415218.pdf
    • https://cdn.shopify.com/s/files/1/0435/9149/9935/files/bipenezeb.pdf
    • https://cdn.shopify.com/s/files/1/0433/5645/5067/files/mefinizosef.pdf
    • https://cdn.shopify.com/s/files/1/0429/8237/5577/files/mapowenojuvoxixali.pdf
    • https://cdn.shopify.com/s/files/1/0440/3340/9174/files/computer_science_class_11_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/8071/2346/files/nolekez.pdf
    • https://cdn.shopify.com/s/files/1/0448/3465/2321/files/natolebeka.pdf
    • https://cdn.shopify.com/s/files/1/0438/6829/1227/files/73198114333.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_off00006228.bin
415f7322a27f8f70cad95a1fc4fd238fe4414b8da517dea34cb3cce1ea4ee440
pdf-font-stream PDF embedded font (sfnt) at offset 0x6228 5172 bytes
font_01_sfnt_off000073b2.bin
6be8dfcdd59172f4da100233da00fde5402ac58a2d18ce42da49fb292c3525f1
pdf-font-stream PDF embedded font (sfnt) at offset 0x73B2 9928 bytes