Malicious PDF — malware analysis report

Static analysis result for SHA-256 37e74ea1d072ec93…

MALICIOUS

PDF

33.3 KB Created: 2020-08-22 23:00:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63051587dc1defda725e2463c7b49559 SHA-1: 6d87098fafab3cba6a71df03a4e895511605e5f7 SHA-256: 37e74ea1d072ec937b2025cfad672b3e9cf3830d85523d6476ec5a170f9708cb
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a lure for sheet music, specifically 'billy elliot sheet music pdf'. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing site or download further malware. 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.cc/pify?keyword=expressing+yourself+billy+elliot+sheet+music+pdf
    • http://titikuno.88keys4music.com/uploads/1/3/0/7/130775085/sosiketenerije_ninuv_tosudujik_sipapoloneronu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3539/3191/files/lagu_ailee_i_will_show_you.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/jumupoturutivuxu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3170/8316/files/ielts_essay_writing_samples_band_9.pdf
    • https://cdn.shopify.com/s/files/1/0448/1833/3858/files/dubated.pdf
    • https://cdn.shopify.com/s/files/1/0434/0416/5276/files/aftershock_afterburn_movie.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21659337375.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bivunamu.pdf
    • https://cdn.shopify.com/s/files/1/0440/0329/5382/files/jobojidawimakowuduritu.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_off000043d7.bin
2460b99884282110f0a8f79f27d6936a9e10cbce9139be41ca0c8ab192100cfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43D7 5624 bytes
font_01_sfnt_off000056d6.bin
3cfda9d5caa8a3ad3f9645eb0bbc293feb755bdd4f752f4d1ead0d2962d7fe02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56D6 9852 bytes

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