Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5a3421110dc2dec…

MALICIOUS

PDF

43.5 KB Created: 2020-06-04 07:54:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3ca430d1734b0709643c705c8bdb63f SHA-1: 9485f245307622a15b39f69b3273e960b8088fd8 SHA-256: f5a3421110dc2dec65771a5cc8066eef6d5524f53fb6fb5006dfa265cae9594e
90 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are structured as SEO-optimized PDF links, suggesting a link farm or redirection mechanism. The presence of 'Fake invoice / payment lure' and 'Callback phishing phone lure' heuristics indicates a social engineering attempt to trick the user. The primary link identified is http://kcpmf.com/uploads/1/3/0/7/130739532/130739532.html#apco+credit+union+routing+number, which appears to be part of a phishing or scam campaign.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://kcpmf.com/uploads/1/3/0/7/130739532/130739532.html#apco+credit+union+routing+number
    • http://upliftinspire.net/uploads/1/3/0/7/130776558/3af33ae6.pdf
    • http://mta-sts.neilmccarthypoetry.com/uploads/1/3/0/6/130622013/5447927.pdf
    • http://hangarmom.com/uploads/1/3/0/2/130287929/2779571.pdf
    • http://solacevirtualtours.com/uploads/1/3/0/9/130969421/wujadit_pusixi_xasuxas.pdf
    • http://hhsarthistory.com/uploads/1/3/0/2/130270957/2387406.pdf
    • http://abogadosalvadorlopezchicago.com/uploads/1/3/1/6/131606533/0becc46f.pdf
    • http://colleenchristmanmusic.com/uploads/1/3/1/3/131379439/mejakix.pdf
    • http://wirelessoptionsoh.com/uploads/1/3/0/4/130488750/752174.pdf
    • http://phoneintakeform.com/uploads/1/3/1/3/131398006/korijupomaf.pdf
    • http://asbhk.com/uploads/1/3/0/7/130776720/giwun-sataxi-furonakepeg-zigugix.pdf
    • http://esptest.lesherosfourbus.com/uploads/1/3/1/6/131637063/935d149d.pdf
    • http://gwenjacksonstories.net/uploads/1/3/1/4/131454265/9981543.pdf
    • http://kcpmf.com/uploads/1/3/0/7/130739532/terms.html
    • http://kcpmf.com/uploads/1/3/0/7/130739532/dmca.html
    • http://kcpmf.com/uploads/1/3/0/7/130739532/policy.html
    • https://sinegimagex.files.wordpress.com/2020/06/zokozudawogagixuj.pdf
    • https://pogunuji.files.wordpress.com/2020/06/xajubenujujuno.pdf
    • https://semijex.files.wordpress.com/2020/06/jixawilalofolevadib.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c67.bin
5318ce93e09266326fe438f12ef26982917f23aadbf6b5d92af5037ca20f91d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C67 11056 bytes

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