Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fea294c5d8825e6…

MALICIOUS

PDF

38.6 KB Created: 2020-03-30 02:01:40 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ab079156ad3152511013c228ea2beb84 SHA-1: 0af98410c3a67f7c7bfc29bb834653797800397a SHA-256: 0fea294c5d8825e61c1f42d71e3f7ecdf711d4e8d66672ed02a446f301f06ca6
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm. The ML classifier strongly indicates maliciousness. The embedded URLs likely lead to further malicious content or phishing sites, and the document's structure suggests an attempt to manipulate search engine results or distribute 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://cecilyeiferle.com/uploads/1/3/0/6/130620475/130620475.html#el+negocio+como+sistema+abierto+y+el+proceso+administrativo
    • http://yogawithbobby.com/uploads/1/3/0/4/130476798/8611859.pdf
    • http://msfetish.com/uploads/1/3/0/7/130776363/3de47c5a8.pdf
    • http://asunderwomenwarrior.com/uploads/1/3/1/3/131380889/fabosamorafov_bimogimuzakeko_lapetevix_boneba.pdf
    • http://christopherediviaio.com/uploads/1/3/0/6/130620217/sowuf-bimawikivaxek-dowovat-zabatiberiline.pdf
    • http://allproc.com/uploads/1/3/0/4/130476697/fasijatuf-fenupugadufew-kifuriporudojo.pdf
    • http://acreativedesigncompany.com/uploads/1/3/1/4/131453248/1469869.pdf
    • http://timothyabrams.com/uploads/1/3/0/4/130435821/7174546.pdf
    • http://mta-sts.mail.kaymcfarlanesmith.com/uploads/1/3/0/8/130874388/595670.pdf
    • http://stefanilucas.com/uploads/1/3/0/7/130775271/nemanalivaxel_mepobiwot.pdf
    • http://alluringdresses.store/uploads/1/3/0/4/130488098/6839aebc0365c.pdf
    • http://951895316609520436.com/uploads/1/3/0/6/130639231/dogemopavimajes.pdf
    • http://votesherrie.com/uploads/1/3/0/3/130323341/8323866.pdf
    • http://canticacanticorum.com/uploads/1/3/1/1/131164021/niwuxidekoj-dalikipede-kalezoxejosu-limojitoxonaki.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_off00006b43.bin
4f8a0cddcab2ca8da04d341c09dee527b13b603cc6477e713b9faec2380cf00b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B43 8776 bytes

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