Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9cde932a2ff6be1…

MALICIOUS

PDF

50.8 KB Created: 2020-08-09 00:30:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 586eb52fed5714628da8d66322112446 SHA-1: b2819998c823c97fb9816321bc0fe545bbe7bb83 SHA-256: a9cde932a2ff6be1597093ee84b7f79fa913fe9e65d5fadf8ba8e0e092ad782b
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one heuristic identifying it as a malicious redirector. The primary malicious URL, https://ttraff.ru/pify?keyword=canciones+catolicas+para+guitarra+pdf, is directly linked to this redirector. The document body, though heavily obfuscated, contains this URL, suggesting it's the intended lure. The file's purpose appears to be to redirect users to potentially harmful content.

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.ru/pify?keyword=canciones+catolicas+para+guitarra+pdf
    • http://sabivibo.despinaphotography.com/uploads/1/3/1/3/131379578/wivesegir_vamutebewot_bopirufulomopub.pdf
    • http://files.agawegier.com/uploads/1/3/2/7/132740423/6327389.pdf
    • http://files.lashbar.life/uploads/1/3/0/7/130739190/8230269.pdf
    • https://cdn.shopify.com/s/files/1/0430/5652/9565/files/free_bass_guitar_chord_chart.pdf
    • https://cdn.shopify.com/s/files/1/0440/9622/5432/files/jiporarividutaboruzogami.pdf
    • https://cdn.shopify.com/s/files/1/0430/3595/1257/files/49346873645.pdf
    • https://cdn.shopify.com/s/files/1/0437/7598/3765/files/vokurumukixozujas.pdf
    • https://cdn.shopify.com/s/files/1/0432/3088/8094/files/vabofibanawovorexe.pdf
    • https://cdn.shopify.com/s/files/1/0441/1277/3272/files/pemeluzazaduwofu.pdf
    • https://cdn.shopify.com/s/files/1/0428/4927/1975/files/52806954104.pdf
    • https://cdn.shopify.com/s/files/1/0431/8055/6452/files/fawuk.pdf
    • https://cdn.shopify.com/s/files/1/0447/9765/7248/files/rf_microelectronics.pdf
    • https://cdn.shopify.com/s/files/1/0437/9105/7058/files/gogebumulediponitites.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/
    • https://cdn.shopify.com/s/files/1/0440/9622/5432/files/jiporarividutaboruzogam

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d85.bin
d4c18a71fd15f020c6a741422e179c4ad0bd1a0e04882ea976bd80183e313279		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D85 5228 bytes
font_01_sfnt_off00008f59.bin
0e169cf96d60ff5c8ff46085b4e22fd8c09c932121cd26568fd7e957259eb0c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F59 14976 bytes

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