Malicious PDF — malware analysis report

Static analysis result for SHA-256 63d63d4318b4c0d7…

MALICIOUS

PDF

36.3 KB Created: 2020-04-03 04:59:46 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3b76a58f1f3b44c447ee01980e6629ca SHA-1: 7504953b8af3eb7869e8af90e61ddb273d091d72 SHA-256: 63d63d4318b4c0d77d6771999bcca8224d62cdc5d13d7137d78f13c3c0ca1a49
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection scheme. The embedded URLs point to various domains, all structured similarly, indicating a coordinated effort to distribute content or potentially malicious payloads. While no scripts were explicitly extracted, the presence of numerous external links and the ML classifier's high confidence score strongly suggest malicious intent, likely related to driving traffic or distributing further malware.

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://mychoicemedicalpractice.com/uploads/1/3/0/4/130476158/130476158.html#word+elements+use+in+a+sentence+generator
    • http://lizmeadephotography.com/uploads/1/3/0/5/130551116/1c196f8.pdf
    • http://qualisplus.com/uploads/1/3/0/8/130874283/bubejudot.pdf
    • http://rejoycesvirtualassistant.net/uploads/1/3/0/9/130969568/ff70f4f4a3d6a.pdf
    • http://wellgroomedmobile.ca/uploads/1/3/1/0/131070116/3016088.pdf
    • http://unistarlines.net/uploads/1/3/0/3/130379548/vunexivunutupo-wuxudexu-bokariw-lajizapi.pdf
    • http://fondationfb.com/uploads/1/3/0/8/130813855/724beae45f.pdf
    • http://goldnewmexico.com/uploads/1/3/1/4/131438241/974f5c6fd.pdf
    • http://grandmasbaklava.com/uploads/1/3/0/8/130814830/deluzibijorikovula.pdf
    • http://cozycoverbooks.com/uploads/1/3/0/6/130604126/8679642.pdf
    • http://gallentineinsurancegroup.com/uploads/1/3/0/6/130621225/tuzewivunim_rezesokakef.pdf
    • http://mayefairartsfestival.com/uploads/1/3/1/3/131382491/d0162fe9.pdf
    • http://superwojo.com/uploads/1/3/0/6/130621964/3965151.pdf
    • http://origamiriskandrewards.com/uploads/1/3/0/5/130588672/08d2c947666.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_off00006622.bin
25f2dba373730773efd094edb7bfd78f0c9410693caed9d77e8047ab1da9dec0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6622 7672 bytes

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