Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb5e9cc1767e7eda…

MALICIOUS

PDF

41.2 KB Created: 2020-05-18 04:49:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-25
MD5: 821bbd30e1f81821ea64c45f40a478f5 SHA-1: 2df2aae4d3cf5ca96b1c504c0d8e86bf1a9c7886 SHA-256: cb5e9cc1767e7edabba38f3fc1e2ddc0c23d862ae6f392f7568ada92552d00ee
96 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a heuristic specifically identifying a 'PDF_SEO_LINK_FARM' pattern, indicating a large number of generated links. The 'SE_INVOICE_LURE' heuristic suggests the document's content is designed to trick the user into clicking these links, which likely lead to malicious PDF downloads. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://findourfetishes.com/uploads/1/3/0/8/130873975/130873975.html#lessee+information+sheet+bir PDF link annotation
    • http://bildyconsulting.com/uploads/1/3/1/8/131857476/24532.pdfIn PDF document text
    • http://andersamundson.com/uploads/1/3/1/4/131437471/kefebigalotazepesu.pdfIn PDF document text
    • http://fletchertavern.com/uploads/1/3/0/6/130620861/tozawuw.pdfIn PDF document text
    • http://keeprimcountrygreen.com/uploads/1/3/1/3/131383864/zelixuvadujagu_pewasug_numijupepu.pdfIn PDF document text
    • http://noiteediamusic.com/uploads/1/3/0/5/130589346/7765570.pdfIn PDF document text
    • http://bonitaboldfashion.com/uploads/1/3/1/3/131382387/vuvez-tomojibixa-wadamatubamonas-dazop.pdfIn PDF document text
    • http://cofhe.info/uploads/1/3/0/7/130740212/wutugazubopetipul.pdfIn PDF document text
    • http://handbeadedart.com/uploads/1/3/0/6/130605422/mewetuxibakiwa_lugid.pdfIn PDF document text
    • http://vituldesignz.shop/uploads/1/3/1/8/131857120/sunogav-xodokojav.pdfIn PDF document text
    • http://mcguire-assoc.com/uploads/1/3/0/3/130379625/pujuzazixaxot.pdfIn PDF document text
    • http://turnheadsmn.com/uploads/1/3/0/3/130379514/dexudevesowoba_bapazipapek_satur_pefogaxim.pdfIn PDF document text
    • http://livetherefinedlife.com/uploads/1/3/0/2/130289171/e98a63.pdfIn PDF document text
    • http://bctransport.net/uploads/1/3/1/4/131437649/fubivep.pdfIn PDF document text
    • http://mylashpaige.com/uploads/1/3/0/5/130539074/buxoxoliluzegowabu.pdfIn PDF document text
    • http://vivabrasil.nl/uploads/1/3/0/2/130288707/repurojosir.pdfIn PDF document text
    • http://jetstream.solar/uploads/1/3/1/1/131163640/bavidipu.pdfIn PDF document text
    • http://ududgans.services/uploads/1/3/0/3/130323454/xadelagakesovogiwo.pdfIn PDF document text
    • http://melissassweetworks.com/uploads/1/3/1/4/131437476/2382bf7522af.pdfIn PDF document text
    • http://naturalmedicine4children.com/uploads/1/3/1/3/131384333/0cd6048d9a3b.pdfIn PDF document text
    • http://getmoneyanddrinkwater.com/uploads/1/3/1/6/131606046/mosasisimivowigez.pdfIn PDF document text
    • http://photosbyrachael.com/uploads/1/3/1/4/131410479/1211987.pdfIn PDF document text
    • http://csod-uk.com/uploads/1/3/1/4/131406114/tusaz.pdfIn PDF document text
    • http://brucehock.com/uploads/1/3/0/8/130873759/561ca.pdfIn PDF document text
    • http://anuitaalasdair.com/uploads/1/3/1/3/131380476/voxupevobesap-dukiz.pdfIn PDF document text
    • http://trulensphotography.com/uploads/1/3/0/8/130874082/e308b5df6c6559a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Related samples 5

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_off000075e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E2 10436 bytes
SHA-256: 278ec76cc3f4ba1bfc8df5ca8a1b164f945dd8717c6fe55bac4893feaf89a430

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