Malicious PDF — malware analysis report

Static analysis result for SHA-256 0729d91fb8aa6356…

MALICIOUS

PDF

40.6 KB Created: 2020-03-29 13:28:46 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 05382cc6cd37418699c15f073c47dd8a SHA-1: 9ee07e88d5bf318684c578c9f74ac615d64b00d6 SHA-256: 0729d91fb8aa6356b1c8e4ba2f2f29ce53fe539e402b0b4ad7c5d142b6bb4a03
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF contains a large number of external links to other PDF files hosted on various domains, indicating a link farm or a distribution mechanism for further malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external URIs supports this assessment. The document body text is heavily corrupted and unreadable, but the embedded URL 'http://adsl-63-204-18-43.benefitplans.org/uploads/1/3/0/5/130588997/130588997.html#west+orange+movie+times' is present.

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://adsl-63-204-18-43.benefitplans.org/uploads/1/3/0/5/130588997/130588997.html#west+orange+movie+times
    • http://guantletters.com/uploads/1/3/0/8/130874422/27285.pdf
    • http://arthappeningbridgewater.ca/uploads/1/3/0/6/130604350/7165762.pdf
    • http://theultimategaminggalaxy.com/uploads/1/3/1/0/131070376/pilisoretox.pdf
    • http://xtravelise.com/uploads/1/3/0/7/130739211/vupumofomula-fojubaxipij-sejexovetipinit.pdf
    • http://theway-book.com/uploads/1/3/0/8/130873861/ralixikavov_vukefewowovemo_vezetudame_babegutili.pdf
    • http://perfeccionatupiel.com/uploads/1/3/0/4/130489023/3294221.pdf
    • http://catwank.com/uploads/1/3/0/9/130969476/e67ab2.pdf
    • http://mdemeranville.com/uploads/1/3/0/7/130739303/8728609.pdf
    • http://rockyridgepomsky.com/uploads/1/3/0/6/130604249/vinomuki.pdf
    • http://strategizeme.com/uploads/1/3/0/3/130379466/3d25ad82066.pdf
    • http://divadanceaustralia.com/uploads/1/3/0/7/130775674/rusuzanal.pdf
    • http://bridgecampus.org/uploads/1/3/0/7/130775346/sogutufemozepunifaz.pdf
    • http://ompeacelove.com/uploads/1/3/0/6/130621758/8970558.pdf
    • http://insideosuokc.net/uploads/1/3/0/5/130542769/sosikumu_jememevugipe_sukigofapusi.pdf
    • http://mail4.grandhotelslux.com/uploads/1/3/0/8/130814063/50a1da2.pdf
    • http://halespinosafamily.com/uploads/1/3/0/5/130588403/27098a4e2208b2.pdf
    • http://hazydaysinthesun.net/uploads/1/3/0/4/130483338/jitijusag-nedud-fawidekivo.pdf
    • http://hoouluainafarms.com/uploads/1/3/0/7/130739867/pezowofiropavesotu.pdf
    • http://oportoforever.com/uploads/1/3/1/0/131070920/roxorizapeg.pdf
    • http://kaylasuzanne.org/uploads/1/3/1/0/131070342/zubikowakip.pdf
    • http://sandcastlelandscaping.com/uploads/1/3/0/8/130873717/6a5ccc.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006078.bin
212c273667c3e3c0d0f163dc76dd5f1454b63fbec35329fe79cdf6d21e04dab6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6078 7524 bytes
font_01_sfnt_off00007e23.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E23 16036 bytes

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