Malicious PDF — malware analysis report

Static analysis result for SHA-256 6218bdf46115f49c…

MALICIOUS

PDF

44.7 KB Created: 2020-07-08 23:44:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 845e8bf276d7486dd488da123f9f34a7 SHA-1: 6e08ab566650fc9db7db42828d404a320392e4f3 SHA-256: 6218bdf46115f49c559c2fe49259b3932c645868e1257415571cbe94120d43e5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to known malicious redirector infrastructure or are part of a link farm designed to artificially inflate search engine rankings. The primary lure appears to be a 'chamberlain myq wifi manual', directing users to a malicious URL. This suggests a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.cc/wb?keyword=chamberlain%20myq%20wifi%20manual
    • http://files.iwfgeorgia.org/uploads/1/3/1/4/131455883/dofez.pdf
    • http://files.exmouthcaninecentre.co.uk/uploads/1/3/0/8/130874128/jenasaj.pdf
    • http://files.mirinmooney.com/uploads/1/3/2/7/132741181/fukowavata-pedew-serido-vugajapazotu.pdf
    • http://files.vomhiddencreek.com/uploads/1/3/1/6/131606127/kukuko.pdf
    • http://files.batrssocal.com/uploads/1/3/1/3/131384789/vipibifoxoteroxu.pdf
    • http://files.samwattfitness.com/uploads/1/3/0/8/130813546/3827992.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://boworuw.files.wordpress.com/2020/07/70044312108.pdf
    • https://zafujuzokud.files.wordpress.com/2020/07/32949305376.pdf
    • https://diwonejivu.files.wordpress.com/2020/06/99979945919.pdf
    • https://ruvasitib.files.wordpress.com/2020/06/78732272642.pdf
    • https://sokotimomule.files.wordpress.com/2020/07/42454680854.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9142282406.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wonazonuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tizerosotusalasebix.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98973723668.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000522c.bin
c4a58445c7b59ffe2a4ce6221c92a242a63e144b4399fbac564c5af6b22cf529		 pdf-font-stream PDF embedded font (sfnt) at offset 0x522C 5004 bytes
font_01_sfnt_off00006319.bin
2ed739368dea05f62d2aaf0321f499d6d8ef41c50d792436f9cf7d930bf056ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6319 14884 bytes
font_02_sfnt_off000090c4.bin
fb27248ec02d804caa0ce6a8dd06a8f0f211157336bc50f6c382585ff5fe3da3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90C4 16084 bytes

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