Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb137d077e42e135…

MALICIOUS

PDF

68.6 KB Created: 2020-08-12 07:43:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9283342e44ee6ef42af916e12969bf06 SHA-1: ff856fa885c8ef980f352422e78d39e0e3eaf296 SHA-256: bb137d077e42e13559693a66655b3b10a51325da77dff04c8d663351052da113
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.ru/pify?keyword=cancionero+catolico+para+misa+con+acordes+pdf', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to disguise malicious activity within seemingly legitimate 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=cancionero+catolico+para+misa+con+acordes+pdf
    • http://files.skynstyle.com/uploads/1/3/0/9/130969408/joxafaxexisuref_sewenuralo_famewilunudabu_migokidalarure.pdf
    • http://pawolosoz.ileanaespejel.com/uploads/1/3/1/0/131070109/6005571.pdf
    • http://files.vivifymultimedia.com/uploads/1/3/2/8/132814958/83422ba140b.pdf
    • http://files.kingofthebelgians.com/uploads/1/3/2/8/132814241/vunepegi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7848/3096/files/79644005356.pdf
    • https://cdn.shopify.com/s/files/1/0435/4467/4455/files/mokofijabidi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2158/9913/files/52704707389.pdf
    • https://cdn.shopify.com/s/files/1/0440/8829/5576/files/93633906086.pdf
    • https://cdn.shopify.com/s/files/1/0432/2613/6743/files/amsco_apush_chapter_23.pdf
    • https://cdn.shopify.com/s/files/1/0433/3164/9689/files/diagnostic_imaging_obstetrics_woodward.pdf
    • https://cdn.shopify.com/s/files/1/0434/4394/5628/files/84918016583.pdf
    • https://cdn.shopify.com/s/files/1/0432/9262/2998/files/repekidasisufavona.pdf
    • https://cdn.shopify.com/s/files/1/0439/3605/5454/files/pumapasite.pdf
    • https://cdn.shopify.com/s/files/1/0434/3716/2646/files/bna_to_lax.pdf
    • https://cdn.shopify.com/s/files/1/0435/4031/6319/files/16423056754.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_off0000beca.bin
93b4247258d219685d870eef7e106b100569255f1a6059a34a7a3684dbbc1e5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBECA 5112 bytes
font_01_sfnt_off0000d00b.bin
935e83b5c7f127719a1a7d7ce767c243ec3fee53407110fb5c89ea859be71442		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD00B 11604 bytes
font_02_sfnt_off0000f583.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF583 4324 bytes

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