Malicious PDF — malware analysis report

Static analysis result for SHA-256 80641e0719c918fd…

MALICIOUS

PDF

37.8 KB Created: 2020-04-05 04:20:12 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-08-25
MD5: 9ad41726ec43dd809dd4f8dd83ff26d6 SHA-1: 0c36594de70e04b469f61fd9062c2864cffddd9b SHA-256: 80641e0719c918fde744ace1a795e49fb4c078a694dfdacf844b8959f21aceaf
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links to other PDF files hosted across various domains. This behavior is indicative of a link farm or a mechanism to distribute malicious content or SEO spam. The ML classifier strongly flagged this PDF as malicious, supporting the suspicious nature of the embedded links.

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://cubistengineering.net/uploads/1/3/0/2/130272994/130272994.html#como+subrayar+un+texto+en+latex PDF link annotation
    • http://playpass.net/uploads/1/3/0/4/130476511/rigonixufidixinoxa.pdfIn PDF document text
    • http://coreydriggs.com/uploads/1/3/0/6/130604044/9450689.pdfIn PDF document text
    • http://sustainablecannabiscoalition.com/uploads/1/3/0/3/130379062/cbdb0d2.pdfIn PDF document text
    • http://builder.anikosspa.net/uploads/1/3/1/0/131069750/giburofatiju-kugewi-tijoraj-noxupajana.pdfIn PDF document text
    • http://greatcleaningcrew.com/uploads/1/3/0/7/130739802/bubobofivusofo-muwilovaxerotot-nelifunereno-mapelolinat.pdfIn PDF document text
    • http://beautifulsound.space/uploads/1/3/0/5/130588461/xexexurerilegopofev.pdfIn PDF document text
    • http://brainandb.one/uploads/1/3/1/4/131407395/tepefusegedim.pdfIn PDF document text
    • http://mygalagiving.com/uploads/1/3/0/5/130551483/8232872.pdfIn PDF document text
    • http://dealofthedaychevyz71.com/uploads/1/3/1/3/131380339/nowosasurotido.pdfIn PDF document text
    • http://triathlonspecificyoga.com/uploads/1/3/0/2/130288502/2c9b21ab.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
🗂 Part of campaign: dealofthedaychevyz71.com 3 samples

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_off00006735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6735 9248 bytes
SHA-256: d17e0d04371764b16f040886155826519ea74284804d800e5ec74492a75c497e

Open this report in the interactive analyzer, or submit your own file for analysis.