Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ed9a989e488c73b…

MALICIOUS

PDF

46.1 KB Created: 2020-03-11 08:43:45 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6da4e8c25c84c80fdaeeeb5de5db54d6 SHA-1: ae8e873a91815b07fa69ecce5d9da7dc9ab8d83e SHA-256: 7ed9a989e488c73bfc207666f094288715fefc534c0039fdddbe1e007ae6195e
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or SEO manipulation tactic, potentially used to distribute malicious content or to improve search engine rankings for unrelated sites. No scripts were extracted, and the document body is heavily obfuscated, limiting further analysis of the immediate payload. The primary attack pattern observed is the mass distribution of 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://feilvbinbaijialemianfeishiwan.br3h.com/uploads/1/3/0/3/130324324/130324324.html#esl+writing+worksheets+intermediate
    • http://mysimplysouthernhome.com/uploads/1/3/0/7/130738972/wolafasa_tasun_jusuwidava_fuwevanivu.pdf
    • http://bridesmaiddressesnewhampshire.com/uploads/1/3/0/5/130551876/b6dbada9f.pdf
    • http://kg4hbn.com/uploads/1/3/0/6/130620290/3843425.pdf
    • http://movecomputing.net/uploads/1/3/0/7/130775465/nepufun.pdf
    • http://carmendaughertyphotography.com/uploads/1/3/0/6/130605448/vopona.pdf
    • http://carterskennel.com/uploads/1/3/0/5/130541131/nosojetufini.pdf
    • http://www.allenfoundationrepairpros.com/uploads/1/3/0/9/130969594/sobeze_moxetosogogide.pdf
    • http://ammaartdebienetre.com/uploads/1/3/0/4/130476427/lamejigi_nivabimuvidudut_rolifesusosa_pabum.pdf
    • http://faithsuite.org/uploads/1/3/0/7/130776220/2206625.pdf
    • http://www.clonmelhillwalking.org/uploads/1/3/0/8/130874016/tewajifidi.pdf
    • http://alangelfand.com/uploads/1/3/0/6/130605338/kegokeleti_lusez_mefoxoxirabeg_fumamo.pdf
    • http://brightlightconstructionllc.com/uploads/1/3/0/6/130621772/462884.pdf
    • http://redriverrolloff.com/uploads/1/3/0/8/130814329/lirugabun.pdf
    • http://www.rayraypainting.com/uploads/1/3/0/8/130874498/e211b.pdf
    • http://wsbwoffice.com/uploads/1/3/0/5/130543685/736cf.pdf
    • http://smallwar.studio/uploads/1/3/0/8/130815726/8917838.pdf
    • http://www.jaketaz.net/uploads/1/3/0/8/130814749/9979056.pdf
    • http://ic1love.com/uploads/1/3/0/7/130775551/joneguwogezejizopod.pdf
    • http://shaun.elemental-consulting.net/uploads/1/3/0/6/130620353/rogezum.pdf
    • http://www.lifeoflekker.com/uploads/1/3/0/6/130620494/6088929.pdf
    • http://mingaretreatcenter.org/uploads/1/3/0/3/130323488/7f6990.pdf
    • http://choosingus.co/uploads/1/3/0/7/130738781/sizixekezuzat.pdf
    • http://schmittsanimalhospital.net/uploads/1/3/0/4/130435679/6971686.pdf
    • http://mikelindenthal.com/uploads/1/3/0/8/130813557/637e5e.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_off000089b8.bin
9b180ef85cc3233599b4d403122622d6d6482d115277a865271fad0a0695957c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89B8 8048 bytes

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