Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3062cf0b56437da…

MALICIOUS

PDF

39.7 KB Created: 2020-08-08 00:12:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: face354a79fe1f81106f3fbd12cef467 SHA-1: 7bee98ab64a38ea1301c789708daeccb8e9e510e SHA-256: f3062cf0b56437dae46e578783138574da8a92178d928987aa2d1444d4a97af6
128 Risk Score

Malware Insights

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

The PDF contains a call-to-action button and embeds a URL that points to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'request letter for bank statement pdf' and the malicious URL itself. This suggests a phishing attempt designed to trick users into navigating to malicious infrastructure.

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.ru/pify?keyword=request+letter+for+bank+statement+pdf
    • http://files.aedpfingerlakes.org/uploads/1/3/1/6/131606393/87805c9f39.pdf
    • http://files.peggyjoyceruth.org/uploads/1/3/1/8/131856539/6274076.pdf
    • http://files.grendylbayn.com/uploads/1/3/2/7/132710601/bemexugulu-fasoxojijavosek-nekerav-batuj.pdf
    • https://cdn.shopify.com/s/files/1/0428/7610/8956/files/40929045408.pdf
    • https://cdn.shopify.com/s/files/1/0447/2219/2537/files/surah_ar_rahman_full_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/biology_class_10th.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nanejixiv.pdf
    • https://cdn.shopify.com/s/files/1/0438/2280/9250/files/kotisewulivitaji.pdf
    • https://cdn.shopify.com/s/files/1/0431/5719/2853/files/blender_merge_vertices.pdf
    • https://cdn.shopify.com/s/files/1/0429/5576/7967/files/addition_and_subtraction_decimals_word_problems.pdf
    • https://cdn.shopify.com/s/files/1/0429/8362/0757/files/antigone_trke.pdf
    • https://cdn.shopify.com/s/files/1/0433/0579/5752/files/34057356166.pdf
    • https://cdn.shopify.com/s/files/1/0438/4410/8445/files/roll_a_d20.pdf
    • https://cdn.shopify.com/s/files/1/0429/6045/3785/files/1883482777.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_off00005d6d.bin
8342c9f091393b75d0cdf6a158f786b289cd5934ba791b8af66dd2cda0b06aee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6D 5524 bytes
font_01_sfnt_off0000701f.bin
60663476cb3d248b2ae91580ce3e5ddf2b0e4a83a8b288cf787d14e9bbd6021b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x701F 9944 bytes

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