Malicious PDF — malware analysis report

Static analysis result for SHA-256 bac83d0b1fe230d0…

MALICIOUS

PDF

49.0 KB Created: 2020-08-26 18:30:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86261319eb11739fcdb7bc44a62179e6 SHA-1: 3984bf74974df3c27dfb6a1218fb28a5a3648f4d SHA-256: bac83d0b1fe230d0d04e515ff4e1179b63124c31f7b76e97a1eefe5190c01c77
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the embedded links redirects to a known malicious domain (ttraff.com), indicating a phishing or redirection attempt. The document body, though heavily obfuscated, contains text related to 'jazz improvisation for guitar' and the wkhtmltopdf generator, suggesting a lure to disguise the 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.com/pify?keyword=jazz+improvisation+for+guitar+a+melo
    • http://rulefife.caitlin-cannon.com/uploads/1/3/0/8/130874368/735b392217b3.pdf
    • https://cdn.shopify.com/s/files/1/0432/6277/1366/files/advanced_english_vocabulary_games.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/sotatagidatafumikizo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/67092865.pdf
    • https://cdn.shopify.com/s/files/1/0433/7988/4186/files/37142298749.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/79144403139.pdf
    • https://cdn.shopify.com/s/files/1/0434/1887/8114/files/saxegax.pdf
    • https://cdn.shopify.com/s/files/1/0438/7710/5832/files/federalists_and_anti-_federalists_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/0951/5413/files/canvas_painting_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0431/0571/4338/files/puzosesuniligewi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0945/files/36454340895.pdf
    • https://cdn.shopify.com/s/files/1/0428/7974/6201/files/zigibe.pdf
    • https://cdn.shopify.com/s/files/1/0436/1479/7981/files/24690169100.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_off00006cc4.bin
01418cd3ae6844c5e19698e8de1dcf2816a3afa0617c1f7df726dd3119257cc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC4 5320 bytes
font_01_sfnt_off00007ed6.bin
d1fc8591c8f250812f5cf6d97afdae96021b094f91034616e2460130e9ba91f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED6 10132 bytes
font_02_sfnt_off0000a1c0.bin
9527d77a8ddbff7143f4b9d9ffa6a9c0a17c14fbd864be9d9139927b2451880e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1C0 16200 bytes

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