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) First seen: 2020-09-24
MD5: 5d6beac0a8ff91d0942cb5b6add439de SHA-1: 9dabb96519af81e46b7ef926e15ee08e190271be SHA-256: 7bc9ddf97a19b76648e423ecf07f17bfbee9a099fe9867806d007e3d96451841
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm. While no scripts were directly extracted, the nature of the links suggests a potential for drive-by downloads or redirection to malicious sites, possibly initiated by embedded JavaScript if present.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 PDF link annotation
    • http://nomadicwellness.com/uploads/1/3/0/5/130539455/c97db.pdfIn PDF document text
    • http://theredgal.com/uploads/1/3/0/8/130874034/sazonin.pdfIn PDF document text
    • http://aialumassage.com/uploads/1/3/0/7/130775784/waxujegivelugi.pdfIn PDF document text
    • http://theartoftea.org/uploads/1/3/0/6/130620666/ruzuxizisivax.pdfIn PDF document text
    • http://arpageddon.com/uploads/1/3/0/4/130435842/1587980.pdfIn PDF document text
    • http://elkaservice.net/uploads/1/3/0/7/130739082/3c46aa219e1afe9.pdfIn PDF document text
    • http://www.oneconceptinternational.com/uploads/1/3/0/6/130639281/02d329870315.pdfIn PDF document text
    • http://tmariedesigns.net/uploads/1/3/0/6/130604517/bepuzefisageka-xulis.pdfIn PDF document text
    • http://poeticfaith.org/uploads/1/3/0/5/130543394/puwumefigikamoj_kaseluzikipi.pdfIn PDF document text
    • http://barbershackfrederick.com/uploads/1/3/0/7/130738997/207195.pdfIn PDF document text
    • http://bpcleaningservices.com/uploads/1/3/0/6/130621095/purudivukav.pdfIn PDF document text
    • http://3plids.com/uploads/1/3/0/7/130738707/kofupupenixenusos.pdfIn PDF document text
    • http://booksforsociety.com/uploads/1/3/0/4/130477952/988a2116.pdfIn PDF document text
    • http://app-access.de/uploads/1/3/0/6/130605143/477407.pdfIn PDF document text
    • http://autodiscover.isaiahsixeight.org/uploads/1/3/0/2/130289658/1edddff75529b4.pdfIn PDF document text
    • http://www.vicejerseys.com/uploads/1/3/0/9/130969042/d9cd5b9.pdfIn PDF document text
    • http://theshopaccessories.com/uploads/1/3/0/8/130814021/zorunafak.pdfIn PDF document text
    • http://bartendersfetish.com/uploads/1/3/0/3/130379299/425356.pdfIn PDF document text
    • http://oldnationz.online/uploads/1/3/0/6/130639362/d3f506a1cec1b0f.pdfIn PDF document text
    • http://callumworsnop.com/uploads/1/3/0/5/130550777/12efa5f9.pdfIn PDF document text
    • http://www.arleyvillages.co.uk/uploads/1/3/0/6/130603903/4361234.pdfIn PDF document text
    • http://houstonsplumber.com/uploads/1/3/0/5/130588803/rovuvixalomujofaf.pdfIn PDF document text
    • http://t24-r-wga-wasc-group.com/uploads/1/3/0/7/130739559/novisebul.pdfIn PDF document text
    • http://www.annapikiben.com/uploads/1/3/0/4/130490461/e5551dde299.pdfIn PDF document text
    • http://mgogoing.com/uploads/1/3/0/3/130313588/likodomo.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000825b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x825B 8408 bytes
SHA-256: 5ebe268bffd298e8d3a4940c8f3cf7391e8bef46fc99cd70f7112a637f63315b
font_01_sfnt_off0000a2a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2A8 16036 bytes
SHA-256: ddc6c38a5929b263b215a5b0c7aa8b1a409f146866f06980111f9f21a6232bf4

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