Malicious PDF — malware analysis report

Static analysis result for SHA-256 662579f29ee827ae…

MALICIOUS

PDF

79.2 KB Created: 2020-03-06 15:36:34 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: e56e1f6f909b5d9fce299f713fbe6e47 SHA-1: 9d49894befbd368c4aed4fdc27f1e6341c0efdef SHA-256: 662579f29ee827aedb9911e3964d64cdc7cd9c8d0fc62d54b8152024c5ead7ba
96 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO spam or malware distribution. The heuristic PDF_SEO_LINK_FARM indicates a large number of these links, suggesting a malicious intent to redirect users. The embedded URL points to a page that appears to be a lure, possibly to download a second-stage payload.

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://host230.carmichaelnl.com/uploads/1/3/0/5/130551746/130551746.html#abdominal+mass+differential+diagnosis+ppt PDF link annotation
    • http://messagesfromthedivine.org/uploads/1/3/0/4/130476940/fb90d38.pdfIn PDF document text
    • http://cyclebavaria.com/uploads/1/3/0/6/130639849/1531124.pdfIn PDF document text
    • http://1988ltb.com/uploads/1/3/0/6/130639734/a42b8aabfc3.pdfIn PDF document text
    • http://misfotografie.de/uploads/1/3/0/8/130874397/803363223f1f1e.pdfIn PDF document text
    • http://theindmusicnetwork.com/uploads/1/3/0/5/130590295/d089c9f80.pdfIn PDF document text
    • http://www.ohhsonaughty.com/uploads/1/3/0/7/130775242/3b1ef7.pdfIn PDF document text
    • http://www.order.sssus.com/uploads/1/3/0/5/130590413/318cfac0e58bf.pdfIn PDF document text
    • http://glencoveestates.com/uploads/1/3/0/8/130814441/1990894.pdfIn PDF document text
    • http://packdestock.com/uploads/1/3/0/4/130436343/487c9e7c.pdfIn PDF document text
    • http://visionary-affairs.com/uploads/1/3/0/6/130622051/6a5cffc1d33cda.pdfIn PDF document text
    • http://www.tintitlawton.com/uploads/1/3/0/6/130621066/jinibopep-jatinubiwegaraj-webixi-purerolemezuri.pdfIn PDF document text
    • http://shepardspace.com/uploads/1/3/0/6/130604904/3f44bd2b.pdfIn PDF document text
    • http://cycotron.com/uploads/1/3/0/5/130588202/4229492.pdfIn PDF document text
    • http://worthysfencing.net/uploads/1/3/0/4/130489933/7ccbe980fd.pdfIn PDF document text
    • http://cofse.net/uploads/1/3/0/2/130274338/1218307.pdfIn PDF document text
    • http://richoutcomes.com/uploads/1/3/0/5/130539345/5bff98d2f410.pdfIn PDF document text
    • http://hostmaster.kiteklinik.com/uploads/1/3/0/5/130547373/rojikenesipofub.pdfIn PDF document text
    • http://baijiaboyulechenghuiyuanzhuce.f18.ebkf.org/uploads/1/3/0/5/130539763/sigakitudejufijap.pdfIn PDF document text
    • http://chinyc.com/uploads/1/3/0/6/130605269/e11f71cf9e.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

Related samples 1

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C3A 9416 bytes
SHA-256: aca4fbd31279d208d3831877e584b446abe4adff70e6485752c34e5c0ce4675a

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