Malicious PDF — malware analysis report

Static analysis result for SHA-256 b217302536df213e…

MALICIOUS

PDF

38.2 KB Created: 2020-06-12 00:06:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5255e3cba0f69b7fb0cf5a36b072e3c7 SHA-1: 5f19535f2061419dccd44d45fb1a3e892c18ad86 SHA-256: b217302536df213e3ee7c37f5ee900ade25c15ddc5b94e9faa1bf9fac79cbe95
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are numerically or generically named PDF files hosted on various domains. The document body text, though partially corrupted, suggests a lure related to 'Constituio federal artigos de 194 a 200 pdf'. This indicates a likely SEO spam or link farm attack pattern designed to drive traffic to these external sites. No scripts were extracted, and the primary malicious activity appears to be the distribution of numerous external links.

Heuristics 3

  • 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.
  • 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://mclaughlinassociates.com/uploads/1/3/1/3/131380107/131380107.html#constituio+federal+artigos+de+194+a+200+pdf
    • http://trigonhealth.com/uploads/1/3/0/6/130639958/65931.pdf
    • http://myinclusiveclassroom.com/uploads/1/3/0/8/130813961/5231028.pdf
    • http://aguirrefoundationrepair.com/uploads/1/3/1/8/131856815/7191725.pdf
    • http://stalingelhoef.com/uploads/1/3/0/8/130874136/bosuvanu.pdf
    • http://nonnahsvirtualadminservices.com/uploads/1/3/0/5/130544131/zagexawe-rurosetofexovi-ralizafev-zawiximap.pdf
    • http://worksbyfaith.net/uploads/1/3/1/0/131070719/7e8a6a5fc4.pdf
    • http://sabinescottage.com/uploads/1/3/0/5/130539205/8dd1a256db5d.pdf
    • http://deepdivelearning.com/uploads/1/3/0/5/130588377/a2ed95fa129862.pdf
    • http://fandori.com/uploads/1/3/0/6/130639567/9613037.pdf
    • http://mta-sts.mail.tnrangers.org/uploads/1/3/0/4/130488750/4364706.pdf
    • http://autoaccidentlawyerswtl.com/uploads/1/3/0/6/130622077/6568137.pdf
    • https://tawumigudifo980931470.files.wordpress.com/2020/06/mitobodobefefenefuvove.pdf
    • https://pamowuvesez.files.wordpress.com/2020/06/29077098425.pdf
    • https://dilupojuze.files.wordpress.com/2020/06/94001332971.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_off000065b1.bin
0d162d432bd5c7454888f66faa127cd21c3949fa194ee3cb83bf8f7581a1a61a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65B1 12452 bytes

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