Malicious PDF — malware analysis report

Static analysis result for SHA-256 558fd7522a5877f0…

MALICIOUS

PDF

42.2 KB Created: 2020-03-20 07:57:59 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3fc40766ea1fcb8dde2e58feddd9dcd5 SHA-1: f0ba2dc4aabba72678defa149bbff2e09cb4c98c SHA-256: 558fd7522a5877f0d2c64172089aaf507000aafa1a615b1e7fef111518fb7517
62 Risk Score

Malware Insights

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

The PDF document contains numerous external links, a common tactic for SEO spam or directing users to malicious sites. The document body, though partially corrupted, suggests a lure related to 'exercises with the letter m for preschool children'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, with 'memoire-alat.fr' being a dominant host. 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://unique-security-solutions.com/uploads/1/3/0/4/130483527/130483527.html#ejercicios+con+la+letra+m+para+ni%C3%B1os+de+preescolar
    • http://memoire-alat.fr/uploads/1/3/0/7/130775722/1169808.pdf
    • http://hydrominer.net/uploads/1/3/0/5/130589219/viwanefabiral.pdf
    • http://bobsfitnessstudio.com/uploads/1/3/0/6/130621132/tunolet.pdf
    • http://redibargains.com/uploads/1/3/0/3/130323216/4448374.pdf
    • http://www.aaronhodkingolf.co.uk/uploads/1/3/0/6/130605112/fiparukanadixe-neborotodivuli-muzujinuwi.pdf
    • http://www.annaparkernaples.com/uploads/1/3/0/2/130288707/2819178.pdf
    • http://www.357leather.com/uploads/1/3/0/7/130776068/vasipeluzoja-xabolur-jogut-rudovisufemitob.pdf
    • http://netliving.com/uploads/1/3/0/5/130544468/8406a.pdf
    • http://kashirajapan.com/uploads/1/3/0/4/130484005/wezume_rugalarowa_vurijawerigudi.pdf
    • http://pocdogs.org/uploads/1/3/0/7/130775797/6700221.pdf
    • http://onyxlashbrow.com/uploads/1/3/0/7/130738887/bigovuka_fawudu_buxetafagimogen.pdf
    • http://wichitataste.net/uploads/1/3/0/5/130550752/rokosabogaxi-toxumimamurobeg-labozejob.pdf
    • http://mandwfoundation.com/uploads/1/3/0/2/130288644/1328554.pdf
    • http://mail.digitalsaintsdesign.com/uploads/1/3/0/9/130969990/5941227.pdf
    • http://bzhighperformancemarketing.com/uploads/1/3/0/7/130775837/jasimaduzelagifejo.pdf
    • http://ulmedsoc.com/uploads/1/3/0/8/130814001/9806163.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_off000078d8.bin
475a6e84b31ba404bef3ac8990ffc7aa1719221a9cfbbe77b48ef5ddca6fc668		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78D8 8664 bytes

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