Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8ccebf19d2a3c30…

MALICIOUS

PDF

42.3 KB Created: 2020-06-01 10:40:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d72950f85b871d308ec03227e2d9338d SHA-1: 278c9f34035df64ae8b286344d9863611e979533 SHA-256: b8ccebf19d2a3c3043da04e1570a47765ef6e851d1f040d58a261f3e81496a6d
96 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with the heuristic 'PDF_SEO_LINK_FARM' indicating a mass link farm. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Prisma guidelines for review'. The primary malicious intent appears to be directing users to a network of linked websites, likely for SEO manipulation or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://skinspiritlife.com/uploads/1/3/0/7/130775871/130775871.html#prisma+guidelines+for+review
    • http://universalrideservicellc.org/uploads/1/3/0/5/130543874/3986951.pdf
    • http://mondelice.org/uploads/1/3/1/4/131437889/e497ba.pdf
    • http://jennakarensoftfurnishings.com/uploads/1/3/0/7/130776667/zotupesud.pdf
    • https://lomodusemuw.files.wordpress.com/2020/05/juvaxu.pdf
    • https://fajetiw.files.wordpress.com/2020/05/73001002247.pdf
    • https://xibelilunaf.files.wordpress.com/2020/05/jepunafomabixarikoterimow.pdf
    • https://sejidinaduk.files.wordpress.com/2020/05/45518409681.pdf
    • https://pixudefixig.files.wordpress.com/2020/05/kewugixifedi.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007838.bin
9856340db368767e4a5de1655c5f97d01290ebd51aa4c78d88afd01b70b1e95b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7838 11588 bytes

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