Malicious PDF — malware analysis report

Static analysis result for SHA-256 db7fb4e6af9fe0c6…

MALICIOUS

PDF

41.2 KB Created: 2020-03-15 13:31:25 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 6f23f2bf5105c3e13a97d26f2c2e8b01 SHA-1: 6b2fc58bc8f5e0d1125eba6c573704400202a0fa SHA-256: db7fb4e6af9fe0c6a0dd67d1fe289ccc0a3a7bbc435c59dce46ab329ee054287
104 Risk Score

Malware Insights

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

The PDF contains a large number of external links, indicating a link farm designed to host malicious content or redirect users. The presence of a 'download button' heuristic further supports the lure of downloading a payload. The document body, though heavily obfuscated, contains embedded URLs that are likely part of this malicious infrastructure. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://74-123-77-190.mgwnet.com/uploads/1/3/0/6/130604597/130604597.html#accounting+standards+in+india+summary+pdf PDF link annotation
    • http://northwestarkinfo.com/uploads/1/3/0/5/130543543/a56f354bf9.pdfIn PDF document text
    • http://bnbgourou.net/uploads/1/3/0/4/130488169/renovidusu.pdfIn PDF document text
    • http://kilbarronmd.net/uploads/1/3/0/8/130874298/1106673.pdfIn PDF document text
    • http://filmroar.com/uploads/1/3/0/6/130621055/1282160.pdfIn PDF document text
    • http://www.friendshipremodeling.com/uploads/1/3/0/7/130776795/3719852.pdfIn PDF document text
    • http://ninja-casino.net/uploads/1/3/0/2/130272644/waxed.pdfIn PDF document text
    • http://mta-sts.mx.smokeshowingnj.com/uploads/1/3/0/7/130739544/zodaretojumow-gekigufuraw-pewonepuwugut-disitolibu.pdfIn PDF document text
    • http://www.packofer.com/uploads/1/3/0/4/130483109/kekexakugu.pdfIn PDF document text
    • http://suehail.com/uploads/1/3/0/2/130271028/rexiwuvuzudite-pogagivusid.pdfIn PDF document text
    • http://anticsofsusieq.com/uploads/1/3/0/2/130270979/ae6256.pdfIn PDF document text
    • http://biharvidyapith.com/uploads/1/3/0/7/130776169/logokavusewugogat.pdfIn PDF document text
    • http://voyagr.net/uploads/1/3/0/8/130815311/688ab45ca.pdfIn PDF document text
    • http://taideinto.com/uploads/1/3/0/5/130546457/vopejulanolepumewor.pdfIn PDF document text
    • http://www.tempolegal.com/uploads/1/3/0/5/130551684/885c80ef.pdfIn PDF document text
    • http://cannonballlacrosse.com/uploads/1/3/0/7/130739490/5035550.pdfIn PDF document text
    • http://trainingcenterchurch.com/uploads/1/3/0/4/130490193/366494.pdfIn PDF document text
    • http://www.hoovesnhounds.co.nz/uploads/1/3/0/8/130814237/3d4f66a8d9472b.pdfIn PDF document text
    • http://moongy.org/uploads/1/3/0/6/130621220/wenutadejuwovawodex.pdfIn PDF document text
    • http://modern-bliss.net/uploads/1/3/0/7/130775201/koxuxigitake.pdfIn PDF document text
    • http://matoniangus.com/uploads/1/3/0/6/130640179/ab01b.pdfIn PDF document text
    • http://noveaucontourus.com/uploads/1/3/0/6/130639025/gedemumowikodogivede.pdfIn PDF document text
    • http://www.sustainablecorps.com/uploads/1/3/0/8/130813956/serowoju.pdfIn PDF document text
    • http://www.mysecureverification.org/uploads/1/3/0/9/130969153/polewokapegikip.pdfIn PDF document text
    • http://brandonkrachal.com/uploads/1/3/0/6/130621509/ef25f6f2f0fca.pdfIn PDF document text
    • http://avnewsdaily.com/uploads/1/3/0/6/130621195/6355481.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

Related samples 2

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7862 7216 bytes
SHA-256: 029c0b8dd1b404bfd2b25044e4abb92e701a407a0e1b9a8136ae77f567e3f88a

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