Malicious PDF — malware analysis report

Static analysis result for SHA-256 599262aba17e30ac…

MALICIOUS

PDF

37.7 KB Created: 2020-03-24 04:16:38 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 21733e387490fe4c066824f0dee75fa3 SHA-1: 4d74d416b1ebcc978af792fc9defb61403d138f8 SHA-256: 599262aba17e30ac33ee78826057323c4b17512fb458fa18bba811c42dac7342
96 Risk Score

Malware Insights

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

This PDF file was generated by wkhtmltopdf and contains a large number of external links, indicating a link farm or SEO manipulation tactic. The ML classifier strongly flagged this PDF as malicious. The primary intent appears to be directing users to a vast network of external URLs, potentially for malicious redirection or to host further attack stages.

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://fit1athletics.com/uploads/1/3/0/6/130604407/130604407.html#zvex+fuzz+factory+eurorack+module
    • http://trashintransit.com/uploads/1/3/0/4/130483445/nugijewek.pdf
    • http://enviropoly.org/uploads/1/3/0/6/130621850/433e6a.pdf
    • http://thorneandivy.com/uploads/1/3/0/8/130873994/e1abc0.pdf
    • http://srealdevelopment.com/uploads/1/3/0/2/130289380/rozonivivedaj.pdf
    • http://wec-mi.com/uploads/1/3/0/3/130313253/5675408.pdf
    • http://bigwalkies.com/uploads/1/3/0/5/130543991/4324693.pdf
    • http://giehs.org/uploads/1/3/0/5/130539002/da8f4f9973f.pdf
    • http://amcdistribution.ca/uploads/1/3/0/4/130476346/1972937.pdf
    • http://eyliad.com/uploads/1/3/0/8/130874490/38f6e79054a.pdf
    • http://mx.tempiodidio.org/uploads/1/3/0/4/130435500/1747704.pdf
    • http://littlefeatherbooks.com/uploads/1/3/0/4/130489386/e2bb733a4.pdf
    • http://frugalmix.com/uploads/1/3/0/7/130739343/lopupok.pdf
    • http://astridbadell.com/uploads/1/3/0/4/130483394/5696221.pdf
    • http://lobstahtrapcaddy.com/uploads/1/3/0/7/130740164/sijufezovuz.pdf
    • http://kcfenceco.com/uploads/1/3/0/5/130540026/0a09f24424f9f5d.pdf
    • http://tengsl.org/uploads/1/3/0/8/130874451/wakatiluvowoxik-tifavamagaxoril-vabesadakojirow.pdf
    • http://holmeslovestravel.com/uploads/1/3/0/5/130542872/88d9ae69f0e57.pdf
    • http://www.barringtonmiddleschoolpto.com/uploads/1/3/0/9/130969308/093b1a176d71.pdf
    • http://www.readingsbykata.com/uploads/1/3/0/3/130323510/5177150.pdf
    • http://miztcomedy.com/uploads/1/3/0/6/130639362/kuzubaborozibod-dudar.pdf
    • http://drdom.com.au/uploads/1/3/0/4/130483844/kazimesutiwoxet.pdf
    • http://mvhsphotography.com/uploads/1/3/0/4/130436525/padusupizaj.pdf
    • http://www.g1entrancesolutions.com/uploads/1/3/0/7/130775046/912e948786c416b.pdf
    • http://sallydavisstudio.com/uploads/1/3/0/7/130739443/vinizo.pdf
    • http://royfonte.com/uploads/1/3/0/6/130639292/togugum.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_off00006789.bin
d332ba34ea6053be9021024eafd11367a8fa0d3c8b534ad0844e326de7142c01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6789 8632 bytes

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