Malicious PDF — malware analysis report

Static analysis result for SHA-256 695604a9fd475a72…

MALICIOUS

PDF

47.1 KB Authoring application: QPDF
MD5: 08934ba77a6d06af0d03774f172b6fb7 SHA-1: 4dfc9ad4ba93de644833680ae87d1b68be7f0360 SHA-256: 695604a9fd475a72ab5ecbc3150cb025b597a98b2288bc5e0fe3739c0ea1b8c0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm, which is a common technique for distributing malicious content or phishing pages. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The presence of a 'download button' lure further supports this. No scripts were extracted, but the primary attack vector appears to be the extensive list of external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nursingresourcesaz.com/uploads/1/3/0/6/130621597/gulup-gadax.pdf
    • http://warriormumandbaby.com/uploads/1/3/0/5/130550993/5c48b3f7ddf7f79.pdf
    • http://aemcreationsllc.com/uploads/1/3/0/6/130639524/refezipuw-dagodojimenej-gopewepog-nuboraj.pdf
    • http://chasovo.ru/uploads/2020/01/28/6546917.pdf
    • http://ukcitizenshipbyinvestment.com/uploads/1/3/0/3/130323255/xuzirafu_serabanu.pdf
    • http://roj.mailsens01.online/uploads/2020/01/29/02d9c731.pdf
    • https://votefarani.weebly.com/uploads/1/3/0/2/130289189/7011381.pdf
    • http://mohamed-albarasi-academy.com/uploads/1/3/0/4/130476740/tegenoradepelit-fuwekuxa-mimofovasedirep.pdf
    • https://kogijidapij.weebly.com/uploads/1/3/0/6/130605017/9599291.pdf
    • http://cfthomas.com/uploads/1/3/0/4/130489097/pepitur_rajuwaga.pdf
    • http://michaelphelannotary.com/uploads/1/3/0/3/130323596/murujosavisus.pdf
    • http://asia-africarenewableenergyforum.org/uploads/1/3/0/6/130639436/ziwifuvebuxabosere.pdf
    • http://xojalizu.audiostart56.icu/uploads/2020/01/29/fajoji-sipowetulotur-xifitotumuke-xulev.pdf
    • https://somovares.weebly.com/uploads/1/3/0/5/130588843/9336856.pdf
    • https://vezavanavelu.weebly.com/uploads/1/3/0/5/130551518/453cfda7.pdf
    • http://dojef.slepttava.xyz/uploads/2020/01/27/wigofuwuk_narifivuponuto_wotufexajizo_xafowareja.pdf
    • https://tiroxogube.weebly.com/uploads/1/3/0/5/130590672/wegami.pdf
    • http://kformacion.com/uploads/2020/01/28/6412384.pdf
    • http://tryhardkitchen.com/uploads/1/3/0/5/130589413/c164be7442c32fb.pdf
    • http://rollosolar.com/uploads/2020/01/28/1bff762.pdf
    • http://mynaturalplace.org/uploads/1/3/0/4/130488741/4826701.pdf
    • https://mezesawe.weebly.com/uploads/1/3/0/6/130604595/wabawewupunepe-rofov.pdf
    • http://artdiscoveryinmuseums.com/uploads/1/3/0/6/130621698/7efc50c6ab.pdf
    • http://oakclass.com/uploads/1/3/0/5/130539923/130539923.html#niv+bible+pro+apk
    • http://www.adobe.com/).Noto
    • http://www.google.com/get/noto/http://www.adobe.com/type/This
    • http://scripts.sil.org/OFLNoto

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001767.bin
afeae76a6fd0a331a389bdabff7a2ccd95d449969bef61a3b8f25067e478c3b8
pdf-font-stream PDF embedded font (sfnt) at offset 0x1767 9052 bytes
font_01_sfnt_off000078bf.bin
d5ed1c3e32e121bc7fdf4b7f64e9f52042883cdc8d0b4eb1f0c73bff7e2be32e
pdf-font-stream PDF embedded font (sfnt) at offset 0x78BF 4236 bytes