Malicious PDF — malware analysis report

Static analysis result for SHA-256 afde81d7df596019…

MALICIOUS

PDF

39.1 KB Created: 2020-06-16 19:48:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82541a08358fe6c22f034509d17be136 SHA-1: 7ceeab3af0acf0865021c7781af0ec856e3f2a11 SHA-256: afde81d7df5960199093491f9b0d89f773426330ac62d8fb3aeae0fcbc6cc4ae
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body text mentions 'Exercise apps free', suggesting a lure. The primary purpose appears to be directing users to a network of websites, likely for SEO spam or to host further malicious content. No scripts were extracted from this sample.

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://lisasproduction.com/uploads/1/3/1/1/131163563/131163563.html#exercise+apps+free
    • http://hyaozhen.com/uploads/1/3/1/1/131164312/991118.pdf
    • http://centralpatuxedo.com/uploads/1/3/1/0/131069886/8481553.pdf
    • http://webdisk.mainecla.org/uploads/1/3/1/3/131379959/luwofalugas-wurigorubera.pdf
    • http://webmail.renew-membership-netflix.com/uploads/1/3/0/4/130488486/dutilemu-zudekefobipe.pdf
    • http://74-123-78-212.mgwnet.com/uploads/1/3/0/5/130539373/zepazakutuzitum.pdf
    • http://air-rev.com/uploads/1/3/1/6/131636734/cc42f7c08060bb7.pdf
    • http://jobsight365.com/uploads/1/3/0/5/130588452/mitader-setuzi-sukapamoduji-pewuduwegedaked.pdf
    • http://spencergolds.org/uploads/1/3/0/5/130545557/wafodukogujerikipev.pdf
    • http://spotdrives.net/uploads/1/3/0/5/130539295/momebewabi-nimur-fugalox-wigofafanu.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_off00005d04.bin
f1c0a7504816913bd469a1be6ba3310f784ef935ebbc76e128603598e4e1e0be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D04 4496 bytes
font_01_sfnt_off00006c55.bin
675da356e5460e54e149b3cd5aa82ede23a46761db6a2f309e691eb7cd7a0e7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C55 10784 bytes

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