Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffe820e7a44eed85…

MALICIOUS

PDF

33.1 KB Created: 2020-08-22 22:41:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 822982e15d4f152aa5a831a4a016d20a SHA-1: b8b2b2c1bd8209ed14cfdcb0a7fae9719a708711 SHA-256: ffe820e7a44eed85c552d3b59157d904d61862466bedc79213349114a3c5b689
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic firings indicate that this is a PDF link farm, likely designed to distribute malicious content or phish users. The embedded URLs, including the malicious redirector at https://ttraff.ru/pify?keyword=lagu+betrayer+bendera+kuning+versi+baru, are the primary indicators of malicious intent. No scripts were extracted from this sample.

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.ru/pify?keyword=lagu+betrayer+bendera+kuning+versi+baru
    • http://files.sc-deaf.org/uploads/1/3/1/3/131383743/8548581.pdf
    • http://dakifuto.charlarae.com/uploads/1/3/0/9/130968961/00d1fb8f6e33.pdf
    • http://files.comeshootwithme.com/uploads/1/3/1/4/131406966/selanukadenurakukaka.pdf
    • http://files.sarah-shines-art.com/uploads/1/3/1/4/131406275/xuvelumer.pdf
    • http://dawil.nature-recharge-botanicals.com/uploads/1/3/2/3/132302751/bosuk_pajox_kogimamupej_nuwetanesel.pdf
    • https://cdn.shopify.com/s/files/1/0436/9245/8152/files/potato_catalase_lab.pdf
    • https://cdn.shopify.com/s/files/1/0447/8969/4630/files/42654235627.pdf
    • https://cdn.shopify.com/s/files/1/0433/3921/9099/files/ice_bursting_dust_devils_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/7239/6193/files/carnatic_music_lessons_in_kannada.pdf
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/uji_kualitatif_boraks.pdf
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/ap_calculus_limits_review.pdf
    • https://cdn.shopify.com/s/files/1/0435/5466/8705/files/noxibesikikapazinirijon.pdf
    • https://cdn.shopify.com/s/files/1/0432/3812/9823/files/vepupos.pdf
    • https://cdn.shopify.com/s/files/1/0432/1653/5720/files/algorithm_design_and_applications_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0440/5130/0517/files/jorge_luis_borges_short_stories.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_off00004472.bin
69295eda5c253c2a0453ba1e0f701caab2dfe4dc09e11980993552a5a5c883f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4472 5268 bytes
font_01_sfnt_off00005679.bin
f1bde0980a6a91b478fb1ececfa24e04ecf07b0d0d016ce8132b64b0deb57daa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5679 9616 bytes

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