Malicious PDF — malware analysis report

Static analysis result for SHA-256 28e280c54d62258d…

MALICIOUS

PDF

51.0 KB Authoring application: Nitro PDF
MD5: b107403e63264eab8034f68005593fcc SHA-1: 8850fb53499f6d284bbd574d1da5a074773dfd75 SHA-256: 28e280c54d62258d725d9554b8d1e060f751a5226ec2b2663201a4cbefcac595
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs likely serve as a link farm to redirect users to phishing sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://glamnsassydesign.com/uploads/1/3/0/4/130483582/d05b562c5f.pdf
    • http://atlanta.diamonds/uploads/1/3/0/7/130740264/128ca9ade.pdf
    • http://swipe-it-world.com/uploads/1/3/0/2/130273962/5287042.pdf
    • http://autodiscover.cathyanneross.com/uploads/1/3/0/2/130291593/9251436.pdf
    • http://infosave.page/uploads/1/3/0/5/130550926/d4adb95e95d474f.pdf
    • http://www.plasticoffset.com.au/uploads/1/3/0/6/130621412/4d3928.pdf
    • http://mlwolters.com/uploads/1/3/0/5/130588463/1388caf.pdf
    • http://spectacularvintageevents.com/uploads/1/3/0/4/130477146/baxewesuxakubi.pdf
    • http://michaeleggerl.com/uploads/1/3/0/6/130620668/wurenusogides.pdf
    • http://www.zollthai.com/uploads/1/3/0/8/130874582/a40dd6428ef23ce.pdf
    • http://www.kspnasari.net/uploads/1/3/0/2/130271041/tobazuge.pdf
    • http://capermeals.com/uploads/1/3/0/8/130874241/7667000.pdf
    • http://thefloridapanther.com/uploads/1/3/0/2/130274146/wabobaratigi.pdf
    • http://wopwomenofpurpose.com/uploads/1/3/0/6/130604862/9249086.pdf
    • http://www.iswearforcongress.com/uploads/1/3/0/2/130274322/lezakofenukeziwewuga.pdf
    • http://orbitvetmap.net/uploads/1/3/0/4/130477455/pixegen.pdf
    • http://unitedcraftgrowers.com/uploads/1/3/0/5/130539223/4b1bf493d.pdf
    • http://jimmyplease.com/uploads/1/3/0/4/130435711/danowudivewezudus.pdf
    • http://www.mangawhainaturalhealth.co.nz/uploads/1/3/0/6/130639792/7054070.pdf
    • http://summer53.pleasingfood.com/uploads/1/3/0/6/130604036/130604036.html#portal+hypertension+ascites+albumin

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000517b.bin
b3affdfdfee497c2d3230853582529cf395d265bfdbb8cde7d84ae9c33602211		 pdf-font-stream PDF embedded font (sfnt) at offset 0x517B 16036 bytes
font_01_sfnt_off000068ad.bin
643b4db1f4bab3aab4ed052518d47b424851863c50081297aa38f555907ff4ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68AD 8312 bytes

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