Malicious PDF — malware analysis report

Static analysis result for SHA-256 5997f0247f367e5e…

MALICIOUS

PDF

47.0 KB Created: 2020-08-12 18:57:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5933c300f1373a92ad2384b1ba6e5e47 SHA-1: b12222c8ecf8f219077ede2e155ce73f5b69ec27 SHA-256: 5997f0247f367e5ec0b9264648e0b1aa19dc220eb556f87dccd116c2091a31a9
120 Risk Score

Malware Insights

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

The PDF contains a link farm of embedded links, with the primary malicious redirector being https://ttraff.com/pify?keyword=bwv+974+adagio+pdf. This suggests a phishing or scam attempt designed to lure users to malicious infrastructure. The document body itself is heavily obfuscated and contains no readable text to further clarify its 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=bwv+974+adagio+pdf
    • http://files.customartsstudio.com/uploads/1/3/1/8/131856277/3486867.pdf
    • http://files.epistemy.eu/uploads/1/3/0/7/130739962/votefajurotunese.pdf
    • http://files.donedberg.com/uploads/1/3/1/4/131407148/598f6c25b.pdf
    • http://files.hanshen-sg.com/uploads/1/3/1/1/131164153/fbd4b.pdf
    • https://cdn.shopify.com/s/files/1/0433/3826/8830/files/tevitirilowolo.pdf
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/goxonewudopimub.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3809/files/7444974021.pdf
    • https://cdn.shopify.com/s/files/1/0441/2204/6616/files/log_antilog_amplifier.pdf
    • https://cdn.shopify.com/s/files/1/0433/9063/2101/files/happy_birthday_piano_chords.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/tanovumobu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7829/5450/files/wadajutexumatamad.pdf
    • https://cdn.shopify.com/s/files/1/0434/4676/3677/files/1752352936.pdf
    • https://cdn.shopify.com/s/files/1/0431/2114/8061/files/html_embed_properties.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46496449222.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/xovixusone.pdf
    • https://cdn.shopify.com/s/files/1/0434/0377/2056/files/8267667786.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_off0000650c.bin
e15cb9dd85a89d241f2914fa5a473343a2a15079eb48581cd1e9281428938856		 pdf-font-stream PDF embedded font (sfnt) at offset 0x650C 5428 bytes
font_01_sfnt_off000077c4.bin
d344ecaf31fab7b7150a458b4ccc47a95e39c53d82f89de4149599501c5a0e6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77C4 10088 bytes
font_02_sfnt_off00009a51.bin
46d9b83afd797048ab251ddfc9ca9a6db44f3280724c231f6a80a061bcc6fc12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A51 16120 bytes

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