Malicious PDF — malware analysis report

Static analysis result for SHA-256 56e08355eb89034d…

MALICIOUS

PDF

64.1 KB Created: 2020-07-31 06:15:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f5a77555a51601e10d3a07f2aa2aadb6 SHA-1: 3a6fcb3a10e91ef21fd4474308798b36a74cf7a5 SHA-256: 56e08355eb89034d57b5dd97c1bd6b36c9edcfb213b9ebdcfef8b0d1824fbb39
128 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm, suggesting a deceptive lure. The presence of a download button and embedded URLs further supports this. The primary malicious URL, 'https://ttraff.ru/pify?keyword=best+pdf+to+word+converter+for+mac+free', is flagged as a redirector to potentially malicious infrastructure. The document body is heavily obfuscated, preventing a clear understanding of its specific content, but the overall pattern points to a phishing or scam attempt.

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=best+pdf+to+word+converter+for+mac+free
    • http://files.richbrownies.com/uploads/1/3/0/8/130813307/4dd855.pdf
    • http://files.kipmcgrathtuition.wales/uploads/1/3/0/7/130739343/wekemogidotivu.pdf
    • http://files.foodsfourthought.com/uploads/1/3/0/8/130873741/9b91b464178e53.pdf
    • http://files.klaversclassroom.com/uploads/1/3/0/8/130814121/vofupupa.pdf
    • https://cdn.shopify.com/s/files/1/0430/2821/8010/files/medinuzo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81599599528.pdf
    • https://cdn.shopify.com/s/files/1/0433/9020/6115/files/12487359166.pdf
    • https://cdn.shopify.com/s/files/1/0437/3217/2965/files/30578766797.pdf
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/lotigudesi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5560/4134/files/pepofawavudu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/13437430596.pdf
    • https://cdn.shopify.com/s/files/1/0438/4122/4861/files/26099318938.pdf
    • https://cdn.shopify.com/s/files/1/0438/6773/4171/files/girupefojelidi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/pegunevijomumota.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_off0000b7f5.bin
d1c409a7a1cf77b0939d35e657799aa29bb71720f9b4baaa46aebf308eec0505		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7F5 5208 bytes
font_01_sfnt_off0000c9a3.bin
a143bcd012ac25a845a0c280831e3cd53f5d2ecdc9911a118b81b08ccc1742e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC9A3 12832 bytes

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