Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb0ade5647458c2b…

MALICIOUS

PDF

38.9 KB Created: 2020-03-25 11:05:12 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 8b6faf43e9fd3a83fab29a498f7cbd13 SHA-1: 8d94053ea4ea389a169ab653debd7bbbf94e9c23 SHA-256: bb0ade5647458c2b49b08ce32aa5142925be7ae5854ed96d3efd3521e245466c
96 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, many of which point to other PDF files hosted on various domains. This pattern is indicative of a link farm or SEO poisoning technique, designed to drive traffic to potentially malicious content. The primary URL found in the document body, http://jhrpropertyltd.com/uploads/1/3/0/9/130969164/130969164.html#palabras+con+valentina, is part of this network. No scripts were extracted, limiting the analysis of direct payload delivery mechanisms.

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://jhrpropertyltd.com/uploads/1/3/0/9/130969164/130969164.html#palabras+con+valentina PDF link annotation
    • http://richmond-math.com/uploads/1/3/0/5/130539091/lulexosebijavej.pdfIn PDF document text
    • http://emotionhealth.net/uploads/1/3/1/0/131070080/nalinivojediwox-seset-tipalo-nisudu.pdfIn PDF document text
    • http://christian76.com/uploads/1/3/0/7/130776169/6fcb8e1e1b.pdfIn PDF document text
    • http://ottiservicesllc.org/uploads/1/3/0/4/130489958/gapunupaguvidim_wadigega_rowari_gonawozewomoxo.pdfIn PDF document text
    • http://mirrorinyourattic.com/uploads/1/3/0/6/130639578/5ed4abdfab.pdfIn PDF document text
    • http://wd-consult.com/uploads/1/3/0/3/130379681/paxogusogawukol-xugagatif.pdfIn PDF document text
    • http://artscienceweb.com/uploads/1/3/0/5/130544078/4840833.pdfIn PDF document text
    • http://wisdomboiler.com/uploads/1/3/0/8/130874501/1647611.pdfIn PDF document text
    • http://jiuyouqipaiyouxi.br3h.com/uploads/1/3/0/7/130739294/xupodewoxozobow.pdfIn PDF document text
    • http://www.ramadanrush.com/uploads/1/3/0/5/130539042/7be31ffeefcb.pdfIn PDF document text
    • http://paretonutrition.org/uploads/1/3/0/4/130435738/8288105.pdfIn PDF document text
    • http://nicolashaircuttingseminars.com/uploads/1/3/0/6/130620456/6235613.pdfIn PDF document text
    • http://www.higherselfessentials.com/uploads/1/3/0/6/130622059/solibito.pdfIn PDF document text
    • http://racinemetalrecycling.com/uploads/1/3/1/1/131164419/fafuxenoki.pdfIn PDF document text
    • http://ssphotography.net/uploads/1/3/0/3/130324451/6531741.pdfIn PDF document text
    • http://godestinationom.com/uploads/1/3/0/5/130589268/pojukofakob_wufir.pdfIn PDF document text
    • http://transusxpress.com/uploads/1/3/0/5/130589159/nusevuzepuwulodawasu.pdfIn PDF document text
    • http://interpro-books.net/uploads/1/3/0/6/130621973/d84a547e.pdfIn PDF document text
    • http://menofmassive.com/uploads/1/3/0/6/130620788/3c5153156e1abdf.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_off00007413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7413 6672 bytes
SHA-256: ba5ccec533868206bc1dc6266401ab8b53a4305af96e2166d56c7eeeff529f6e

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