Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb8e3fdddc9e7fda…

MALICIOUS

PDF

37.1 KB Created: 2020-03-30 07:45:18 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 97a2b0f6021dbc9d5fea1b2f46c89bcc SHA-1: 6e056c1c53da1a93774a112ad8ea5a275ebc214a SHA-256: bb8e3fdddc9e7fda1fc836269addf546af8b717b350421f011d0f43599528932
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body, though partially corrupted, includes the text 'Informe de auditoria ejemplo ecuador', suggesting a lure for users to click on the embedded links. The primary URL identified is http://melbournehotelplaceholder.devsite-1.com/uploads/1/3/0/8/130813144/130813144.html#informe+de+auditoria+ejemplo+ecuador. No scripts were extracted from this sample.

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://melbournehotelplaceholder.devsite-1.com/uploads/1/3/0/8/130813144/130813144.html#informe+de+auditoria+ejemplo+ecuador PDF link annotation
    • http://gloriagoldreich.com/uploads/1/3/0/2/130289310/dumuvod-vobepogal-jifukalab-favomosunelaxim.pdfIn PDF document text
    • http://christian-charles-photography.com/uploads/1/3/0/5/130541209/de284efa474d.pdfIn PDF document text
    • http://inglesaldia.com/uploads/1/3/0/5/130540461/7444052b6617bd.pdfIn PDF document text
    • http://odessawaterwell.com/uploads/1/3/0/6/130621261/d41e8087893.pdfIn PDF document text
    • http://eastcobbrugbyclub.org/uploads/1/3/0/8/130874432/masijegawimu_gemufo_towizaxupedipis_sovadojomugefal.pdfIn PDF document text
    • http://westcoastchristiancollege.com/uploads/1/3/0/6/130621197/6934195.pdfIn PDF document text
    • http://supremefoundations.ca/uploads/1/3/0/8/130874142/vukijimawifiderifag.pdfIn PDF document text
    • http://lrdlst.com/uploads/1/3/1/3/131383790/3611204.pdfIn PDF document text
    • http://moses-balan.com/uploads/1/3/0/4/130488834/05b44391497.pdfIn PDF document text
    • http://hopehealthacademy.org/uploads/1/3/0/7/130776006/funabug.pdfIn PDF document text
    • http://telangaana.info/uploads/1/3/0/5/130543868/1143868.pdfIn PDF document text
    • http://hospicehearts.org/uploads/1/3/0/2/130272571/kajaziditadugaxuxoxo.pdfIn PDF document text
    • http://thechrischapman.com/uploads/1/3/1/4/131453259/gutegitivulo.pdfIn PDF document text
    • http://nextgenproperties.net/uploads/1/3/0/7/130740244/2406351.pdfIn PDF document text
    • http://mirvavogt.com/uploads/1/3/0/5/130590698/2096711.pdfIn PDF document text
    • http://webdisk.tgwca.org/uploads/1/3/0/7/130776504/959635.pdfIn PDF document text
    • http://brianhandley.com/uploads/1/3/1/0/131069915/a183d27b5.pdfIn PDF document text
    • http://buysomethingscary.com/uploads/1/3/0/2/130291702/e52bb5d32b8.pdfIn PDF document text
    • http://robinjoyphotography.net/uploads/1/3/0/5/130545475/9b34ffed453ec3.pdfIn PDF document text
    • http://raycoffee.net/uploads/1/3/1/4/131406732/25936f.pdfIn PDF document text
    • http://weearthrepresentahs.com/uploads/1/3/0/8/130874366/bfbca0a12cc.pdfIn PDF document text
    • http://mmccolorado.online/uploads/1/3/0/2/130287942/vusiziba_zelogonux_zofepamuxis_zipedenarafebi.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 8

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_off00006824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6824 7496 bytes
SHA-256: 3e720149e9361239b274c7f56b3e2d4f4331533f118f2a8e6844fbfb90323834

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