Malicious PDF — malware analysis report

Static analysis result for SHA-256 4124524010cee31a…

MALICIOUS

PDF

38.1 KB Created: 2020-04-04 11:26:52 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4382720986b97e31faa864e7ac634ff4 SHA-1: b7fecc89e1132719273e4a1c2a57be8e30167611 SHA-256: 4124524010cee31aa5130175210c865838deb8685fb8157d063abbd5ac71cae5
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are numerically or generically named, suggesting a link farm or SEO spam tactic. The document body contains a misleading title about a curable disease, likely intended to attract clicks. The primary heuristic indicates a PDF SEO link farm, with multiple external URLs pointing to similarly structured paths on various domains. The document's purpose appears to be directing users to these external sites, which may host further malicious content or phishing pages.

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://caesarsphiladelphia.com/uploads/1/3/0/5/130547999/130547999.html#leucemia+linfoc%C3%ADtica+aguda+es+curable
    • http://farm-art.net/uploads/1/3/0/6/130639342/5243084.pdf
    • http://cedarhost.com/uploads/1/3/0/5/130588278/156d10745be.pdf
    • http://spellinsbee.com/uploads/1/3/1/4/131438477/sifisexoweb.pdf
    • http://elitemaintenancellc.net/uploads/1/3/1/3/131379873/kojaziwofe_dexebike.pdf
    • http://webmail.snowhillmd.gov/uploads/1/3/0/3/130323154/9869619.pdf
    • http://lexartis.mx/uploads/1/3/1/0/131070204/5479820.pdf
    • http://shaohuawu.com/uploads/1/3/0/5/130588951/tumabulefunanuni.pdf
    • http://willowdalecrane.com/uploads/1/3/0/7/130776877/pixodigajezojor_vuzarogu.pdf
    • http://ifonlychild.com/uploads/1/3/0/2/130291365/sefaruzidivuwu.pdf
    • http://bourioanatoliesfilms.net/uploads/1/3/0/6/130639757/9969425.pdf
    • http://buynaklaw.com/uploads/1/3/0/5/130539774/riwawixababa.pdf
    • http://crystalcharlotteeaston.com/uploads/1/3/1/4/131483557/8092833.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_off000069ec.bin
ffcf4f49414addae78af23793f1814bbdb0ee59f97dc3cfbb552f91f5934cf95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69EC 8704 bytes

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