Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb6d01fd93ddcd90…

MALICIOUS

PDF

38.2 KB Created: 2020-08-25 20:10:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c1c96bdb717199cb97a09ae5f203b20 SHA-1: adc30e795bd098e97ad230a6e1b532240d175177 SHA-256: bb6d01fd93ddcd90eb5e2c879e007f0202f8ebedd3750d29fc76405eed80f5eb
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, suggests a lure related to 'loom bands instructions'. The heuristic firings indicate the PDF is designed to redirect users to malicious infrastructure, likely for further exploitation or phishing. The primary IOC is the redirector URL.

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=loom+bands+instructions+step+by+step
    • http://files.unicornforgivenesscoaching.com/uploads/1/3/1/3/131398573/xunubuwojo.pdf
    • http://files.alteredpurposes.com/uploads/1/3/1/4/131437174/cd0596592ad22.pdf
    • http://files.getfitwithfaryn.com/uploads/1/3/2/7/132740277/metowosikovotijo.pdf
    • http://files.southbuffalowheelhouse.com/uploads/1/3/2/6/132681476/1344391.pdf
    • https://cdn.shopify.com/s/files/1/0431/7764/0093/files/bijovimodarupojilevinewax.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3208/files/cake_decorating_basics.pdf
    • https://cdn.shopify.com/s/files/1/0430/3116/7137/files/repopomabarepoxasivol.pdf
    • https://cdn.shopify.com/s/files/1/0431/6001/0906/files/govakibe.pdf
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/fatikofelumaketobuto.pdf
    • https://cdn.shopify.com/s/files/1/0433/4449/4750/files/gevidemoxunanapivibaxuw.pdf
    • https://cdn.shopify.com/s/files/1/0429/6274/7548/files/matem.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/jetafijipebiturewaniwe.pdf
    • https://cdn.shopify.com/s/files/1/0429/7208/6423/files/fixture_liga_aguila_2020_2.pdf
    • https://cdn.shopify.com/s/files/1/0430/4620/7637/files/giwezuzowate.pdf
    • https://cdn.shopify.com/s/files/1/0439/9408/7582/files/blame_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0429/2499/8819/files/coldplay_viva_la_vida_piano_sheet.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_off000056f8.bin
391d42c395a3b780bc0f3c770de2eae02d367f75e64a7dec8d874638d4fd268a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56F8 5368 bytes
font_01_sfnt_off00006925.bin
922f82e409f1068dc03f94e6a193e146f87ce2d4f1d02cc427be8848c004d938		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6925 10080 bytes

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