Malicious PDF — malware analysis report

Static analysis result for SHA-256 20cf5272c9dca6e8…

MALICIOUS

PDF

59.5 KB Created: 2020-08-20 13:16:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5537d490bf657edac1c65cb983af33bf SHA-1: 04df2c2770283673c9c9bcde52b2c980ca12813c SHA-256: 20cf5272c9dca6e828513f5c1412bf2d5b72b733e18be46f6403bf7fbe452faf
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=agricultural+economics+definition+pdf'. This suggests the document is designed to trick users into visiting malicious sites, likely for phishing or malware distribution. No scripts were extracted, but the presence of numerous links and the specific redirector URL strongly indicate a malicious intent.

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.cc/pify?keyword=agricultural+economics+definition+pdf
    • http://dofajut.mattmonfettlaxcamp.com/uploads/1/3/2/6/132696067/2390608.pdf
    • http://pujuki.arkansasartpottery.com/uploads/1/3/1/3/131380177/25eddf6b0.pdf
    • http://files.csgga.org/uploads/1/3/0/8/130874010/tubix.pdf
    • http://mebedega.dixiehighcounseling.org/uploads/1/3/0/7/130740073/4089089.pdf
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/ab_negative_blood_type_diet.pdf
    • https://cdn.shopify.com/s/files/1/0435/1338/1028/files/technical_sales_engineer_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/rifanarogovejor.pdf
    • https://cdn.shopify.com/s/files/1/0450/4230/3140/files/switzerland_rail_map.pdf
    • https://cdn.shopify.com/s/files/1/0454/1127/0824/files/isometric_dot_paper.pdf
    • https://cdn.shopify.com/s/files/1/0443/7016/5916/files/adm_logo.pdf
    • https://cdn.shopify.com/s/files/1/0433/1811/6510/files/18893766212.pdf
    • https://cdn.shopify.com/s/files/1/0430/6714/6397/files/supapap.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/xutiparomuviwuwem.pdf
    • https://cdn.shopify.com/s/files/1/0439/5306/2043/files/32029786123.pdf
    • https://cdn.shopify.com/s/files/1/0439/1501/8392/files/torawomudasolasudedewej.pdf
    • https://cdn.shopify.com/s/files/1/0428/7712/4774/files/vawog.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_off0000aa5b.bin
77ea94cbff2b4d9ceb943ca506c882fbbb53fb3e8059e610994262ac284c3024		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA5B 5464 bytes
font_01_sfnt_off0000bcd8.bin
f6992dc3ab3226dbcca08b72fb95ca79477566e6ad7d42a3bb5f87d0f4653bd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCD8 10588 bytes

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