Malicious PDF — malware analysis report

Static analysis result for SHA-256 29a84869d2526f2e…

MALICIOUS

PDF

36.1 KB Created: 2020-06-03 10:17:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: b913e5678dfaf7f6c20f16a5a758799d SHA-1: 1501dce205c4fdb6dda81ca6bbfbedae37470044 SHA-256: 29a84869d2526f2eb45593fc83b51efd277d55e30ee44d87a3076362a3013c12
136 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a PDF_SEO_LINK_FARM heuristic. The primary lure appears to be related to 'wedding planning list excel sri lank', directing users to a network of sites. The ML classifier strongly indicates maliciousness. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://monabadawy.net/uploads/1/3/1/8/131859613/131859613.html#wedding+planning+list+excel+sri+lank PDF link annotation
    • http://hostmaster.thesentinelgallery.co.uk/uploads/1/3/0/5/130544448/b4f59be92e7c336.pdfIn PDF document text
    • http://webmail.usasurvival.org/uploads/1/3/1/3/131379290/1896170.pdfIn PDF document text
    • http://mcamotorclubofamericaaffiliateprogram.com/uploads/1/3/1/4/131438517/felede.pdfIn PDF document text
    • http://monabadawy.net/uploads/1/3/1/8/131859613/terms.htmlIn PDF document text
    • http://monabadawy.net/uploads/1/3/1/8/131859613/dmca.htmlIn PDF document text
    • http://monabadawy.net/uploads/1/3/1/8/131859613/policy.htmlIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://site55082.mywhc.ca/uploads/1/3/0/8/130813821/zekodepimak.pdfIn PDF document text
    • https://wapumisa.files.wordpress.com/2020/06/wamaj.pdfIn PDF document text
    • https://rezitofu.files.wordpress.com/2020/05/44242558688.pdfIn PDF document text
    • https://nepumoja.files.wordpress.com/2020/05/28873898514.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59DF 1560 bytes
SHA-256: 564c9408f7a1e86b9ec327e44622235a09ef3dba98e2d6fcdf885658f5c1eabb
font_01_sfnt_off000061cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CB 9832 bytes
SHA-256: c7c85122d28b67fbf2dee97a7ae9bce03267f81eee82517e0e66a8a220ba38a6

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