Malicious PDF — malware analysis report

Static analysis result for SHA-256 bad02c12770f4f25…

MALICIOUS

PDF

42.0 KB Created: 2020-05-15 03:55:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 4c9e7c2990362c34fdf5762bf5ba1fc8 SHA-1: 0517d25e1f4817a8d6a5bc4e2ddc4bae97cb8ed4 SHA-256: bad02c12770f4f25c04b6eab8f8bc41ef5cc2a9767cdcc1169d05966d7c0a2b1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though heavily obfuscated, contains references to URLs that are also present in the list of extracted URLs. The primary function appears to be directing users to a vast network of external sites, likely for SEO spam or to host further malicious content.

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://eflynnparenting.com/uploads/1/3/1/4/131483128/131483128.html#avatar+movie+in+telugu+hd PDF link annotation
    • http://oceanbreezedentistrysf.com/uploads/1/3/1/3/131383981/192014.pdfIn PDF document text
    • http://bubblecrops.org/uploads/1/3/0/6/130620952/4123377.pdfIn PDF document text
    • http://kickofflottery.com/uploads/1/3/0/6/130621158/8391881.pdfIn PDF document text
    • http://simplysuze.com/uploads/1/3/1/4/131483307/ginofo.pdfIn PDF document text
    • http://literacycenterofharlingen.org/uploads/1/3/0/2/130271054/5277ae6b648.pdfIn PDF document text
    • http://cchsgradnight.com/uploads/1/3/0/9/130969706/tudagisafe_suviniwewat_rekawiwupup_tewudivomeraf.pdfIn PDF document text
    • http://yourhomeinto.com/uploads/1/3/0/5/130539243/6361732.pdfIn PDF document text
    • http://houseplantshq.com/uploads/1/3/1/8/131871390/9cef6aa0aa6d48.pdfIn PDF document text
    • http://slayhousemk.com/uploads/1/3/1/4/131406077/7864338d.pdfIn PDF document text
    • http://joanneseymour.com/uploads/1/3/0/5/130539188/7898140.pdfIn PDF document text
    • http://amrepairs.ca/uploads/1/3/0/7/130776790/5345676.pdfIn PDF document text
    • http://cowle.de/uploads/1/3/0/2/130270777/bd54f68ba379.pdfIn PDF document text
    • http://pjcitrus.net/uploads/1/3/1/1/131164027/kudopafobubova.pdfIn PDF document text
    • http://macondruglawyer.com/uploads/1/3/1/4/131453712/gibubololule.pdfIn PDF document text
    • http://nikitaono.net/uploads/1/3/0/2/130289392/buxipagewa.pdfIn PDF document text
    • http://enspirebrandcbd.com/uploads/1/3/0/4/130489926/jigaboroki_gulixebami.pdfIn PDF document text
    • http://southeastaerialimaging.com/uploads/1/3/0/6/130639662/famuzevitez-pafuwibim.pdfIn PDF document text
    • http://qb8.us/uploads/1/3/0/7/130739537/837462.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D51 11264 bytes
SHA-256: 87b13ddcb208b6132458d5185b2ab1e00d2f035ef945bf6edeb0ad2ed63dfbd6
font_01_sfnt_off0000827e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x827E 16952 bytes
SHA-256: 62b47d66e3379444a577024b61f76cbd9a68a25d0ed599236b1f3aa8a8324e7a

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