Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bed59cfb79ddedb…

MALICIOUS

PDF

47.2 KB Created: 2020-08-05 13:23:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8c2100e7e9a07b8b0c88adc70aeb26e SHA-1: b00c1aba30bc5cfc3d346d66abbe14707d72024f SHA-256: 9bed59cfb79ddedb739e2732c89981a4dc42d39f0a9d820bd3f6cddb8e121f21
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic firing for a redirector link pointing to 'https://ttraff.cc/pify?keyword=atropin+sulfat+pdf'. This indicates the document's primary purpose is to redirect users to a malicious site. The ML classifier also strongly supported a malicious verdict. The document body contains obfuscated text and the URL itself, suggesting a lure for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=atropin+sulfat+pdf
    • http://files.madxllc.com/uploads/1/3/0/9/130969146/8852600.pdf
    • http://files.roadwaysport-n-trailer.com/uploads/1/3/1/4/131438353/b5d754a0.pdf
    • http://files.randomfrequents.com/uploads/1/3/1/3/131380558/6138371.pdf
    • https://cdn.shopify.com/s/files/1/0430/9165/6855/files/43294931003.pdf
    • https://cdn.shopify.com/s/files/1/0433/1605/2123/files/xinexi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8827/1777/files/safari_history_timestamp.pdf
    • https://cdn.shopify.com/s/files/1/0433/9980/7126/files/74792753214.pdf
    • https://cdn.shopify.com/s/files/1/0435/3395/9327/files/carbon_footprint_journal.pdf
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/bukhari_hadith_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/lanubiwugofesosabenu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8415/1974/files/kotor_2_cheats_xbox.pdf
    • https://cdn.shopify.com/s/files/1/0433/7254/4150/files/arabya_rajani_bengali.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/magesuvilakimosopu.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_off000066e8.bin
4854ed9104c15ab2c159db93684208b75e1f54a34221ad9dffae82007a0cbc6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66E8 4788 bytes
font_01_sfnt_off0000772a.bin
3ba0be0adc5b2d3076aed8bc55e6ef5287ca7a193016b1e79749edb764971d2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x772A 13288 bytes
font_02_sfnt_off0000a033.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA033 4324 bytes

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