Malicious PDF — malware analysis report

Static analysis result for SHA-256 75d8c91521e26961…

MALICIOUS

PDF

34.3 KB Authoring application: pdf-parser
MD5: 882060e670a1f0947896715311bd934e SHA-1: d69634075bc3e623e1e1925cbda070c579272541 SHA-256: 75d8c91521e26961c609d87c7519c8c1ec979594a16e64c905eb29f482c4c727
152 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. These links point to various domains, suggesting a coordinated effort to distribute content or manipulate search engine results. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution via these linked PDFs.

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://nicoleforcouncil.com/uploads/1/3/0/5/130539658/womoj-xurubupo-bamonuwutujug.pdf
    • http://craftyladycrushingcancer.com/uploads/1/3/0/5/130550970/mudizadipiv.pdf
    • https://bumasepetaxime.weebly.com/uploads/1/3/0/4/130489475/ee8bd74d05d.pdf
    • http://zip-darom.ru/uploads/2020/01/27/7f5cdfc2b3c950.pdf
    • http://stocksbullbear.com/uploads/1/3/0/5/130540296/8061ed98d9.pdf
    • http://nationalassetretrievalservices.com/uploads/1/3/0/5/130541904/f69bb29b5b.pdf
    • http://expertsforall.com/uploads/1/3/0/6/130620667/marajol-folonajafinab.pdf
    • http://audiostart29.icu/uploads/2020/01/28/rirolezew.pdf
    • http://avalonbeachpodiatry.com.au/uploads/1/3/0/5/130551162/vupawawevuzozap.pdf
    • http://miamfoundation.org/uploads/1/3/0/3/130313641/jilivid-bebiw-xonasuweki-tefitakoma.pdf
    • https://nudexizibax.weebly.com/uploads/1/3/0/2/130271212/1543444.pdf
    • http://foro.ewrty.xyz/uploads/2020/01/28/8424969.pdf
    • http://pivewa.kropanev.online/uploads/2020/01/28/lokexokedetuto.pdf
    • http://micdrop.weebly.com/uploads/1/3/0/2/130289676/c0d42.pdf
    • http://weg.rugbyspb.ru/uploads/2020/01/29/1882652.pdf
    • http://excelorbit.in/uploads/2020/01/27/9772622.pdf
    • http://rebeccasmithinc.com/uploads/1/3/0/4/130475964/gupumonozole.pdf
    • http://juvividam.provzor.ru/uploads/2020/01/28/jederef.pdf
    • http://all-enproducts.com/uploads/1/3/0/6/130621113/xuzisu-bekigisufiwub.pdf
    • http://backroadcreations.com/uploads/1/3/0/6/130604477/bd0fed.pdf
    • http://beatafurstenberg.com/uploads/1/3/0/4/130476262/rukiguv.pdf
    • http://magneticmenuboards.us/uploads/1/3/0/6/130605259/tebajusoga-femamabafoke-vuluforuginivu-suduvixekomatod.pdf
    • http://business-laboratory.ru/uploads/2020/01/27/1994405.pdf
    • http://americanbeachphoto.com/uploads/1/3/0/4/130483733/6815872.pdf
    • http://niwawriters.net/uploads/1/3/0/5/130551880/130551880.html#bubble+sort+algorithm+c+++example

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000170e.bin
d51477103412cb6b846f1a1b8c38bd6616ca4880865e51f6dd03820b0b6c12a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x170E 7132 bytes

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