Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf13990b20461611…

MALICIOUS

PDF

47.2 KB Authoring application: Adobe PDF Library 9.0
MD5: 9b832294de97aa2cddbe93a8db9ec9bc SHA-1: c7d57419f4bf230f58d53c7745f9771d9afc8b21 SHA-256: cf13990b204616112e193dc7ff53ba99f3f40eb67ca8d2f9c0a338bfebb028aa
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. This suggests a tactic to drive traffic to numerous PDF files, potentially for SEO manipulation or to host malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as phishing or a traffic redirection mechanism. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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 https://fogobazugu.weebly.com/uploads/1/3/0/2/130272428/8f65f7f83.pdf
    • http://soloptometry.com/uploads/1/3/0/6/130621995/wabumivomotado_wenagolin_supuwofarizax.pdf
    • http://thompsonhomeservicesllc.com/uploads/1/3/0/2/130271080/4397844.pdf
    • http://pappasmusicproject.com/uploads/1/3/0/6/130621510/koremono.pdf
    • http://365christianseniors.com/uploads/1/3/0/3/130324152/fugekib.pdf
    • http://climatechallenge.nz/uploads/1/3/0/5/130550721/xodex_ronamiboj_zilutixunozegur_lalufis.pdf
    • http://jezivaku.vipiski-besplatno13.icu/uploads/2020/01/29/e46d3b3a4bfedb.pdf
    • http://path.wolc.com/uploads/1/3/0/6/130640181/dulavekujekof.pdf
    • http://sharlanov.ru/uploads/2020/01/28/makupofukes-mixedosabuteze.pdf
    • http://beboxiro.localdatemeet.club/uploads/2020/01/29/f14eee657795d69.pdf
    • http://fuwibe.partnerkimho.ru/uploads/2020/01/29/374351.pdf
    • http://landoninlondon.com/uploads/1/3/0/5/130550684/175e893ba22e3.pdf
    • http://atriumdesignstudios.com/uploads/1/3/0/4/130435986/jurowawomexoge_loravas_benatison.pdf
    • http://lindsayplouffe.com/uploads/1/3/0/3/130379548/dogax.pdf
    • https://buvazetogasefo.weebly.com/uploads/1/3/0/5/130539109/8304195.pdf
    • https://sotakemuguw.weebly.com/uploads/1/3/0/3/130323400/1174629.pdf
    • http://avservnetwork.com/uploads/1/3/0/4/130483825/6576a6de.pdf
    • https://latakegupus.weebly.com/uploads/1/3/0/5/130550931/7914786.pdf
    • http://sweetestdreams.org/uploads/1/3/0/6/130639239/130639239.html#mathematics+teacher+resume+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001591.bin
ee6ae0654487bb88231682b5f7e854b375ec910834334e2065ee531f89157022		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1591 7800 bytes

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