Malicious PDF — malware analysis report

Static analysis result for SHA-256 2360c5ab9eba580a…

MALICIOUS

PDF

60.2 KB Created: 2020-04-11 03:53:41 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 218505ab8a10c4050ef7cf73227bfe0b SHA-1: 434c98e42f94289619a4f333b1e92211b700e907 SHA-256: 2360c5ab9eba580a3a645f83fc51920d9b9dceb8eadd662a034509d79113ac6b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO manipulation tactic. The document body, though partially corrupted, indicates a lure related to a 'diet chart for weight loss'. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves directing users to a network of external PDF files hosted on various domains, likely to distribute malware or engage in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://cpanel.music4you.nl/uploads/1/3/0/2/130272994/130272994.html#diet+chart+for+weight+loss+for+male+pdf
    • http://transportationservicesintl.com/uploads/1/3/0/5/130590741/3021583.pdf
    • http://bluffsboxbreaks.com/uploads/1/3/0/5/130543985/65f06.pdf
    • http://jojoscreations.org/uploads/1/3/1/3/131398532/xoxoguzujowijize.pdf
    • http://harpesque.com/uploads/1/3/0/3/130324278/5ef9ad9e.pdf
    • http://lenyx.com/uploads/1/3/0/5/130543065/jozunisut.pdf
    • http://kaleruy.net/uploads/1/3/0/7/130739275/nusojazo-rokekorixikomij-nunidodefetuleg.pdf
    • http://124millerway.com/uploads/1/3/0/9/130969580/0b902c67a.pdf
    • http://kicksmaster.club/uploads/1/3/1/0/131070574/jikajazad_jimizuno_nomemewedeka_neralogakenita.pdf
    • http://studiwoodrecording.com/uploads/1/3/1/4/131406372/polibix-zulojigibaturix-wulof-zirowinaxazew.pdf
    • http://absoluteventoparty.com/uploads/1/3/0/7/130776321/6401106.pdf
    • http://growmywealth.net/uploads/1/3/0/7/130775760/gobozaxorilatudutu.pdf
    • http://reclaimeddesignworks.net/uploads/1/3/0/6/130639782/xomegapogiregog.pdf
    • http://bucketguestlist.com/uploads/1/3/0/4/130488322/diliwu.pdf
    • http://twtugo.com/uploads/1/3/0/5/130539714/majadipasuma.pdf
    • http://studiwoodrecording.com/uploads/1/3/1/4/131406372/polibix-zulojigibaturix-wulof-zirowin
    • 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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5ad.bin
cdf6ffc4269c61e7a77708ea0cb81a8b374755aa686632912c07f1adb6c9b58a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5AD 7956 bytes

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