Malicious PDF — malware analysis report

Static analysis result for SHA-256 2940caee0e2caa0e…

MALICIOUS

PDF

40.3 KB Created: 2020-03-29 05:42:06 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: cf52ef1a98d7da85452b70812a06b565 SHA-1: a9ac77f0a53144fab07013bf0952f9fdd9b7cb3f SHA-256: 2940caee0e2caa0ece32dd46ff64fb6edf07a6e02de2170094ce5993efda8842
94 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a link farm, embedding a large number of external links to other PDF documents hosted across various domains. The primary URL points to a page that appears to be a lure, disguised as game-related content, which then redirects to a collection of other PDFs. The ML classifier strongly indicated maliciousness, and the structure suggests an attempt to distribute or host a large volume of potentially malicious content.

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://shopbelfast.info/uploads/1/3/0/5/130551962/130551962.html#pathfinder+best+support+cleric+build
    • http://toddlertoothcare.com/uploads/1/3/0/6/130622049/9023020.pdf
    • http://fungfound.org/uploads/1/3/0/5/130539279/5ec80a7056ec.pdf
    • http://m.pamswaycreations.com/uploads/1/3/0/6/130604631/xisewamifu.pdf
    • http://michaelcianfrani.com/uploads/1/3/0/7/130740419/4f294.pdf
    • http://madebytheta.com/uploads/1/3/0/7/130775192/dulonaga.pdf
    • http://mail.shirleyjones.com/uploads/1/3/0/3/130323462/482455048.pdf
    • http://animals-pro.com/uploads/1/3/0/5/130543318/jekitolubotazagagas.pdf
    • http://www.islassistedliving.com/uploads/1/3/0/4/130476506/binadesosobuv-ranejorego.pdf
    • http://www.go-build.co/uploads/1/3/0/8/130814133/dufotexogenavapiv.pdf
    • http://mygoodlife.solutions/uploads/1/3/0/5/130539102/nokewiritodalijo.pdf
    • http://scriptcache.com/uploads/1/3/0/2/130289796/4820460.pdf
    • http://hand-coloredphotographybyaileenfletcher.com/uploads/1/3/0/5/130547215/nimonupevajedamibav.pdf
    • http://antifeverformula.com/uploads/1/3/0/2/130289421/tenasamu_kuger.pdf
    • http://kbapu.com/uploads/1/3/0/6/130621215/9b5acc95160.pdf
    • http://jeffjablonka.com/uploads/1/3/0/5/130543280/zuwiloz.pdf
    • http://isabelsmovement.org/uploads/1/3/0/6/130605389/609816.pdf
    • http://dreammakerfunding.com/uploads/1/3/0/9/130969514/f37aa9f364ec.pdf
    • http://longbeachcommons.net/uploads/1/3/0/3/130324137/fatadifur_mofixonotufiwe_vodiv.pdf
    • http://blackhatbakery.com/uploads/1/3/0/5/130551330/minepopofudikejixebu.pdf
    • http://www.leagueofthemask.com/uploads/1/3/0/6/130621325/6032316.pdf
    • http://andrearivette.com/uploads/1/3/0/6/130620345/854688.pdf
    • http://mta-sts.mail.zionchristianretreat.org/uploads/1/3/0/6/130604042/7b4ef8470c57.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_off00007445.bin
2dbd06a46c184f8249d8ff6ee247b184055e69fd4b05ad53188ff19d1104b477		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7445 8012 bytes

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