Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fecf44d4672f820…

MALICIOUS

PDF

34.9 KB Created: 2020-05-22 13:40:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6547d7c7245e8f9c343b652b3d93a4cc SHA-1: 3bfc32824d6c9eda60a49b7107b440c4246fe965 SHA-256: 8fecf44d4672f820d0617328a22e560710b9e853fef2371c231a3414dc86c3e7
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for malicious content. No scripts were extracted, and the document body primarily contains metadata and the list of URLs. The primary attack pattern observed is the mass distribution of links, likely to manipulate search engine results or to serve as a landing page for further malicious activity.

Heuristics 3

  • 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
  • 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://bodymotivation.net/uploads/1/3/0/6/130621421/130621421.html#abdominal+bracing+exercises+pdf
    • http://washingtoncoasthomes.com/uploads/1/3/0/4/130476359/91c4db447114c.pdf
    • http://anynumberofbirds.com/uploads/1/3/0/5/130588547/narixonikoze.pdf
    • http://thatsthewaybbqgo.com/uploads/1/3/0/5/130550895/3548202.pdf
    • http://onemillionhusbands.com/uploads/1/3/0/9/130969259/8880225.pdf
    • http://symonsvalleyranch.com/uploads/1/3/0/8/130874530/9368334.pdf
    • http://mdhomelab.com/uploads/1/3/0/3/130313122/0691ec.pdf
    • http://backtoblessings.com/uploads/1/3/1/0/131070867/9744472.pdf
    • http://eyezbyk.com/uploads/1/3/0/3/130313359/matutazij-xokugukiberomu-gamogogube-govogox.pdf
    • http://krasnoludkow.pl/uploads/1/3/0/6/130621284/b0cf585a0.pdf
    • http://ms-wendys-class.com/uploads/1/3/0/2/130272470/gimosonev.pdf
    • http://chrismorleyhypnotherapy.com/uploads/1/3/0/2/130289205/walipon.pdf
    • http://wiseworkflows.com/uploads/1/3/0/7/130739987/3349298.pdf
    • http://cassandrascateringandmeals.com/uploads/1/3/0/8/130874368/xotizefebir-sijunu.pdf
    • http://themightywonders.net/uploads/1/3/0/6/130621846/1783670.pdf
    • http://sspastudio.com/uploads/1/3/0/4/130435561/9493998.pdf
    • http://shs1977.com/uploads/1/3/0/4/130475966/5938325.pdf
    • http://antivirus.moraytreesurgeons.com/uploads/1/3/0/2/130289189/d53f3.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a7d.bin
4c12e68f6d77d988b366984b41d0748a17718186170e9a1c64f333f0a0157f47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A7D 9352 bytes
font_01_sfnt_off00006a8f.bin
c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A8F 16204 bytes

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