Malicious PDF — malware analysis report

Static analysis result for SHA-256 90b09ffcff567ca4…

MALICIOUS

PDF

36.8 KB Created: 2020-05-25 03:46:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-10
MD5: b00ea13a868af7718bac136265133e96 SHA-1: cbca3d1d6051e85047f377d77f32f0fff24acf94 SHA-256: 90b09ffcff567ca4d78f6b8f0fa6fed5bb39c2f6bad283516de7ca62ad296c08
104 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are numerically or generically named, suggesting a link farm or SEO poisoning tactic. The document body, though heavily obfuscated, contains references to 'Pokemon dark rising' and multiple URLs, indicating a lure to distribute malicious content or phish users. The presence of a 'download button' heuristic further supports the malicious intent of directing users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://ivyapparelinc.com/uploads/1/3/0/8/130814652/130814652.html#pokemon+dark+rising PDF link annotation
    • http://amy-rose-music.com/uploads/1/3/0/6/130604427/mijozaxo.pdfIn PDF document text
    • http://byhisstripesiamhealed.com/uploads/1/3/1/6/131637248/sawanuri.pdfIn PDF document text
    • http://changetravels.de/uploads/1/3/0/8/130813898/2899521.pdfIn PDF document text
    • http://antishainspiredcrafts.com/uploads/1/3/0/4/130435821/4868763.pdfIn PDF document text
    • http://buatkuterang.org/uploads/1/3/0/2/130287943/pozoz.pdfIn PDF document text
    • http://roleofsource.com/uploads/1/3/0/4/130478609/8461025.pdfIn PDF document text
    • http://mywright2bdazzled.com/uploads/1/3/0/9/130969702/4520043.pdfIn PDF document text
    • http://prosperouspooch.com/uploads/1/3/0/9/130969237/sidofobul-doromirabis.pdfIn PDF document text
    • http://happyhouselift.com/uploads/1/3/0/7/130738945/45d321542d3fc7.pdfIn PDF document text
    • http://mohawkvapors.com/uploads/1/3/0/8/130813577/6075303.pdfIn PDF document text
    • http://bestdealchevyz71.com/uploads/1/3/1/4/131438461/1840343.pdfIn PDF document text
    • http://petit-peche.de/uploads/1/3/0/7/130739791/fepeforamo_medexox_juwusulebipaku.pdfIn PDF document text
    • http://multimodalwritingcenter.com/uploads/1/3/1/3/131398221/radezuk.pdfIn PDF document text
    • http://rowedevelopmentcorp.com/uploads/1/3/1/4/131454436/dixepatigu.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 1

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_off0000634a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634A 10940 bytes
SHA-256: 54dcb60230ac3a85af4d1913f9a30336e36754a16ef76e07c35cd0483dac08fd

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