Malicious PDF — malware analysis report

Static analysis result for SHA-256 ece73d6541827c41…

MALICIOUS

PDF

41.3 KB Created: 2020-03-20 14:49:25 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4f9e52cb51fe5fe060644134ef049bb8 SHA-1: 66cae6a812733910610564ea9b3af926e89590cf SHA-256: ece73d6541827c41cd1f7b8d2a911168c30d23d36132f6156d30e2a0507f99af
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are hosted on domains that appear to be part of an SEO spam or link farm operation. The document body, though heavily obfuscated, contains references to academic citation styles and the wkhtmltopdf tool, suggesting a pretext to drive traffic to these external sites. 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://bellefusion.com/uploads/1/3/0/8/130874674/130874674.html#normas+apa+cita+de+articulos
    • http://washco-feed.com/uploads/1/3/0/7/130775118/6bbe57b309c.pdf
    • http://mta-sts.abettermansbarbershop.com/uploads/1/3/0/4/130483783/vunisilen_valizurire.pdf
    • http://creativeperspective.co.uk/uploads/1/3/0/5/130550824/2894843.pdf
    • http://ntg.grupohedima.com/uploads/1/3/0/5/130551654/54c9a7f.pdf
    • http://www.yourhomefilinvest.com/uploads/1/3/0/7/130738524/7350276.pdf
    • http://www.infinibrow.com/uploads/1/3/0/7/130775588/retogimibewutegala.pdf
    • http://www.justbreathemhc.com/uploads/1/3/0/4/130435670/7342081.pdf
    • http://newchoicemusic.com/uploads/1/3/0/2/130270963/dbb102ab.pdf
    • http://www.kosservpark.com/uploads/1/3/0/6/130620300/fakuvijawetonivuzowo.pdf
    • http://brjventures.com/uploads/1/3/0/7/130739945/fewoloroza.pdf
    • http://www.mekafarm.com/uploads/1/3/0/7/130775878/majulojirimukagi.pdf
    • http://ismustard.com/uploads/1/3/0/6/130622120/8695253.pdf
    • http://g21official.com/uploads/1/3/0/3/130379110/pomivesorovabaxaxuvo.pdf
    • http://huaqiaorenyulecheng.br3h.com/uploads/1/3/0/2/130288602/5558433.pdf
    • http://www.socialwebawareness.com/uploads/1/3/0/9/130969279/vuloj_vugij.pdf
    • http://handymandanny.com/uploads/1/3/0/2/130288316/4343512.pdf
    • http://instituteb.com/uploads/1/3/0/5/130547373/fizipab.pdf
    • http://champironworks.com/uploads/1/3/0/6/130603772/7727222.pdf
    • http://www.eatplantsbewell.com/uploads/1/3/0/5/130542717/9941714.pdf
    • http://heysatan.org/uploads/1/3/0/7/130775758/sazukapulov-lobosot-vanunofasip.pdf
    • http://googledrugs.org/uploads/1/3/0/6/130621691/virurofat.pdf
    • http://timmas.space/uploads/1/3/0/6/130620720/1b809371c.pdf
    • http://crystalcrones.com/uploads/1/3/0/5/130589293/522103.pdf
    • http://www.invisionaryarts.com/uploads/1/3/0/3/130313470/bigedirowig_posokawike.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_off000075c2.bin
2de1ecf7ee04242677a4257728d74ecf34171882c33274a1a7018d51c3da735d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75C2 8776 bytes

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