Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad4c3fc85c29ed54…

MALICIOUS

PDF

41.6 KB Created: 2020-03-12 08:45:33 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: d689516819ea52f47b70acd7155df6fc SHA-1: ad41111a369d902da1d58cbfa68c9e456e584ef6 SHA-256: ad4c3fc85c29ed54b746dda162ac5b726275516b685219397cda6e3b33a27de6
104 Risk Score

Malware Insights

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

The PDF contains a lure for a 'free pdf editor' and hosts a large number of external links, many pointing to other PDFs. This indicates a link farm designed to distribute malicious content. The primary URL http://www.pets-paradise-stmoritz.com/uploads/1/3/0/8/130874470/130874470.html#totally+free+pdf+editor+windows+10 is presented as the lure, while http://reterik.com/uploads/1/3/0/6/130605462/zevox.pdf is the first in the discovered link farm.

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://www.pets-paradise-stmoritz.com/uploads/1/3/0/8/130874470/130874470.html#totally+free+pdf+editor+windows+10 PDF link annotation
    • http://reterik.com/uploads/1/3/0/6/130605462/zevox.pdfIn PDF document text
    • http://younggunsfishingteam.com/uploads/1/3/0/2/130288307/kufutevi-juxukejimib-sotabatipate-xisapixofodax.pdfIn PDF document text
    • http://focusantiglare.com/uploads/1/3/0/5/130551864/7758015.pdfIn PDF document text
    • http://mail.orientalcollectables.com/uploads/1/3/0/5/130547999/junem_vatixewujuma_gusojusodora.pdfIn PDF document text
    • http://bunniesareus.com/uploads/1/3/0/2/130272250/maroxuwerexegag-beris.pdfIn PDF document text
    • http://mta-sts.mx.architectureofasheville.com/uploads/1/3/0/3/130379912/xebire.pdfIn PDF document text
    • http://tassay-nsk.ru/uploads/1/3/0/2/130289733/5194873.pdfIn PDF document text
    • http://chaloulosekdromes.com/uploads/1/3/0/6/130603818/rofudetidozo_zedonezani_seteberim_kidoxafipupubag.pdfIn PDF document text
    • http://groundtruthsalessystem.com/uploads/1/3/0/5/130540352/lujage_wunitofafowiju.pdfIn PDF document text
    • http://packetsleuths.org/uploads/1/3/0/5/130542937/waxobedol.pdfIn PDF document text
    • http://nickhawrylko.com/uploads/1/3/0/5/130589285/ab370f806.pdfIn PDF document text
    • http://belfastdrivered.com/uploads/1/3/0/7/130775762/8476102.pdfIn PDF document text
    • http://averykholt.com/uploads/1/3/0/5/130590229/sonop-bilon-fadokefal.pdfIn PDF document text
    • http://trendablesolutions.com/uploads/1/3/0/6/130639226/topuwe.pdfIn PDF document text
    • http://cloggingworkshops.info/uploads/1/3/0/3/130379118/4995301.pdfIn PDF document text
    • http://hostmaster.swindoncabs.com/uploads/1/3/0/7/130776564/zaxikupixikemesuz.pdfIn PDF document text
    • http://www.darinadenali.com/uploads/1/3/0/7/130775056/xabom.pdfIn PDF document text
    • http://gewuconsulting.com/uploads/1/3/0/8/130815058/jamik_konobe.pdfIn PDF document text
    • http://cannabizstudios.com/uploads/1/3/0/7/130775539/tiwunojasitapodoli.pdfIn PDF document text
    • http://site3.zaleone.com/uploads/1/3/0/8/130874025/xirenanuxalube.pdfIn PDF document text
    • http://www.nomadleatherworks.net/uploads/1/3/0/7/130775050/vegurubagemefax.pdfIn PDF document text
    • http://curvo.org/uploads/1/3/0/5/130540159/zefavi-wogigoxezisev-xerodologivizof-zukalo.pdfIn PDF document text
    • http://cothamsinthecity.com/uploads/1/3/0/2/130271046/tifozelevujetesa.pdfIn PDF document text
    • http://www.santanwholesalehomes.com/uploads/1/3/0/2/130271250/1f9f80e4.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 3

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_off0000779c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x779C 8044 bytes
SHA-256: aad9fd9ebc4aa4680d811ceb8cc50864e660403a556c3055fd74e93edbe8aff6

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