Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bc9ddf97a19b766…

MALICIOUS

PDF

49.5 KB Created: 2020-03-20 06:38:49 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5d6beac0a8ff91d0942cb5b6add439de SHA-1: 9dabb96519af81e46b7ef926e15ee08e190271be SHA-256: 7bc9ddf97a19b76648e423ecf07f17bfbee9a099fe9867806d007e3d96451841
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, identified by the PDF_SEO_LINK_FARM heuristic. These links likely serve to inflate search engine rankings or redirect users to malicious content. The document body contains garbled text and references to 'wkhtmltopdf', suggesting it was generated programmatically rather than being a user-facing document. 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://bridgestreampublishing.com/uploads/1/3/0/5/130590724/130590724.html#john+deere+la105+deck+rebuild+kit
    • http://nomadicwellness.com/uploads/1/3/0/5/130539455/c97db.pdf
    • http://theredgal.com/uploads/1/3/0/8/130874034/sazonin.pdf
    • http://aialumassage.com/uploads/1/3/0/7/130775784/waxujegivelugi.pdf
    • http://theartoftea.org/uploads/1/3/0/6/130620666/ruzuxizisivax.pdf
    • http://arpageddon.com/uploads/1/3/0/4/130435842/1587980.pdf
    • http://elkaservice.net/uploads/1/3/0/7/130739082/3c46aa219e1afe9.pdf
    • http://www.oneconceptinternational.com/uploads/1/3/0/6/130639281/02d329870315.pdf
    • http://tmariedesigns.net/uploads/1/3/0/6/130604517/bepuzefisageka-xulis.pdf
    • http://poeticfaith.org/uploads/1/3/0/5/130543394/puwumefigikamoj_kaseluzikipi.pdf
    • http://barbershackfrederick.com/uploads/1/3/0/7/130738997/207195.pdf
    • http://bpcleaningservices.com/uploads/1/3/0/6/130621095/purudivukav.pdf
    • http://3plids.com/uploads/1/3/0/7/130738707/kofupupenixenusos.pdf
    • http://booksforsociety.com/uploads/1/3/0/4/130477952/988a2116.pdf
    • http://app-access.de/uploads/1/3/0/6/130605143/477407.pdf
    • http://autodiscover.isaiahsixeight.org/uploads/1/3/0/2/130289658/1edddff75529b4.pdf
    • http://www.vicejerseys.com/uploads/1/3/0/9/130969042/d9cd5b9.pdf
    • http://theshopaccessories.com/uploads/1/3/0/8/130814021/zorunafak.pdf
    • http://bartendersfetish.com/uploads/1/3/0/3/130379299/425356.pdf
    • http://oldnationz.online/uploads/1/3/0/6/130639362/d3f506a1cec1b0f.pdf
    • http://callumworsnop.com/uploads/1/3/0/5/130550777/12efa5f9.pdf
    • http://www.arleyvillages.co.uk/uploads/1/3/0/6/130603903/4361234.pdf
    • http://houstonsplumber.com/uploads/1/3/0/5/130588803/rovuvixalomujofaf.pdf
    • http://t24-r-wga-wasc-group.com/uploads/1/3/0/7/130739559/novisebul.pdf
    • http://www.annapikiben.com/uploads/1/3/0/4/130490461/e5551dde299.pdf
    • http://mgogoing.com/uploads/1/3/0/3/130313588/likodomo.pdf
    • http://mgogoing.com/uploads/1/3/0
    • 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_off0000825b.bin
5ebe268bffd298e8d3a4940c8f3cf7391e8bef46fc99cd70f7112a637f63315b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x825B 8408 bytes
font_01_sfnt_off0000a2a8.bin
ddc6c38a5929b263b215a5b0c7aa8b1a409f146866f06980111f9f21a6232bf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2A8 16036 bytes

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