Malicious PDF — malware analysis report

Static analysis result for SHA-256 04d2cb74e66ee611…

MALICIOUS

PDF

35.4 KB Created: 2020-05-17 22:25:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47b0332e069483f645ffbc4208e35943 SHA-1: 81ff2b7a828de6555750f4fa580f7216ed648f91 SHA-256: 04d2cb74e66ee611eb38d89bd355102c4310c50674a512451e84190a91b59fbf
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. The document body contains obfuscated text and URLs, suggesting an attempt to manipulate search engine results or redirect users to malicious content hosted on these external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://pedroimportexport.ch/uploads/1/3/0/5/130550755/130550755.html#blaque+808+remix
    • http://alliedennydesigns.com/uploads/1/3/0/4/130476896/jojogapalazinipepul.pdf
    • http://business-facebook-covid19.com/uploads/1/3/0/4/130476657/56173fa9c5ba06.pdf
    • http://sacredgroove.net/uploads/1/3/1/6/131636862/lubirepojuduranu.pdf
    • http://steelwarecentral.com/uploads/1/3/1/4/131453823/9585175.pdf
    • http://tightandtonepersonaltraining.com/uploads/1/3/0/3/130323190/da8ac8cf08d684.pdf
    • http://laurenjernigan.com/uploads/1/3/0/6/130620532/a35fcf2.pdf
    • http://piscinesaiguablava.com/uploads/1/3/0/8/130814360/fisaraf.pdf
    • http://laent.org/uploads/1/3/1/4/131437685/zakuwozigigapivivomu.pdf
    • http://nikiagra.com/uploads/1/3/0/6/130603859/50897c546df70.pdf
    • http://foundationofunconditionallove.org/uploads/1/3/1/3/131384017/2070458.pdf
    • http://passionforfashion2.com/uploads/1/3/0/8/130814010/kufodufa.pdf
    • http://rebuildingconnection.org/uploads/1/3/0/2/130272644/zesaxojowuxuk-vedinexamulob-waxaduvo-jejuj.pdf
    • http://makeupbyshandre.com/uploads/1/3/0/4/130483923/redezadomose.pdf
    • http://underdogchamps.com/uploads/1/3/0/9/130969176/xezafili.pdf
    • http://modernluxury.ca/uploads/1/3/0/7/130775052/nalupis_dexijifu_gobivorosu_gajagaf.pdf
    • http://careerrx.net/uploads/1/3/1/3/131384289/vafege-xitabo-gadovavosatafu-kimefebe.pdf
    • http://polyproconcretefoamjacking.com/uploads/1/3/0/6/130620484/753735.pdf
    • http://xtreme00.com/uploads/1/3/1/3/131380146/vujepofuwitopuf.pdf
    • http://builtmindsets.com/uploads/1/3/0/6/130639565/0ab8373c1fe908.pdf
    • http://c9concepts.com/uploads/1/3/0/7/130738753/8325583466e41.pdf
    • http://godisrealgame.com/uploads/1/3/1/8/131856771/cd179a45f8d1c3f.pdf
    • http://elchristian.net/uploads/1/3/0/2/130272247/6a606bc48919.pdf
    • http://vackerwindows.com/uploads/1/3/1/4/131438038/wixunarinafodezawa.pdf
    • http://virginiafaeriefestival.com/uploads/1/3/0/6/130604642/ffeb0a01fc53c.pdf
    • http://japanesespitznz.com/uploads/1/3/0/7/130775892/3428677.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c57.bin
2783f68ab0b24ec259cde47f09bac0a6e08a39ad6ea8d46ff5986ad97bc5eb12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C57 10968 bytes

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