Malicious PDF — malware analysis report

Static analysis result for SHA-256 083df8c7ccb50750…

MALICIOUS

PDF

38.0 KB Authoring application: LibreOffice
MD5: f1163462669cfd4d15ef9ad820fe1e32 SHA-1: c96d8dea67669b6be70b35b5e110c97825b5ce16 SHA-256: 083df8c7ccb50750b990d119b9bad5ef5b7a4bf661d235e8d41d401614206a65
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including PDF_RANDOM_URL_LINK and PDF_SEO_LINK_FARM, indicating a large number of embedded links to external PDF files. The ClamAV detection and ML classifier also strongly suggest malicious intent. The embedded URLs likely serve as a link farm or a distribution mechanism for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://albuquerquemobilenotary.com/uploads/1/3/0/7/130738887/9cffa3.pdf
    • http://natinelflowerslinensandrentals.com/uploads/1/3/0/3/130313190/1ae876aff67.pdf
    • http://ilaugh.club/uploads/1/3/0/7/130740378/edd88e0.pdf
    • http://cracksnail.com/uploads/1/3/0/6/130604558/rebigi.pdf
    • http://bb-horses.ch/uploads/1/3/0/9/130969777/pibev.pdf
    • http://drinkinggamescentral.com/uploads/1/3/0/5/130539735/a3e0edfb424e1.pdf
    • http://theillusiveeye.com/uploads/1/3/0/7/130739158/nazafukubag.pdf
    • http://themindfulsociologist.com/uploads/1/3/0/8/130813550/5efd55989e55e.pdf
    • http://benjamingoldbergdmd.com/uploads/1/3/0/3/130313105/faduni.pdf
    • http://cpanel.beautifulbrowsorlando.com/uploads/1/3/0/6/130639413/gaketikugiwepupu.pdf
    • http://marketinginalbania.net/uploads/1/3/0/4/130435746/2ff62b5.pdf
    • http://deckplans.voyagerwebsites.com/uploads/1/3/0/2/130289320/9fa284c6bc14ef7.pdf
    • http://jgregoryfilms.com/uploads/1/3/0/6/130621579/976397.pdf
    • http://aaceglobal.com/uploads/1/3/0/7/130775772/pezufulamip.pdf
    • http://chandlermedicalpllc.com/uploads/1/3/0/8/130873829/910dc15e7697813.pdf
    • http://cloudnificant.com/uploads/1/3/0/5/130551457/c5503.pdf
    • http://honeycombclothing.com/uploads/1/3/0/8/130873894/6059457.pdf
    • http://ludmeister.org/uploads/1/3/0/2/130273814/5e200b4653.pdf
    • http://redneckfest.org/uploads/1/3/0/3/130313000/700da71a.pdf
    • http://apartmentsbastion.com/uploads/1/3/0/3/130313049/mofenubovuman_jidujuzuzex_supajolude.pdf
    • http://claudiamurphy.com/uploads/1/3/0/7/130740210/samuwumeravinunelajo.pdf
    • http://ludgatehillpartners.com/uploads/1/3/0/6/130603737/3994617.pdf
    • http://heartbeatcoffee.com/uploads/1/3/0/5/130551325/3ff3447b3db.pdf
    • http://arielledollinger.com/uploads/1/3/0/6/130605307/xirewogi.pdf
    • http://jodidelaney.com/uploads/1/3/0/5/130544387/ripovosipuxaz.pdf
    • http://a1374119xstreamtravel.xsideas.com/uploads/1/3/0/6/130639635/130639635.html#cure+klebsiella+pneumoniae

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000324e.bin
22e54bf417a05c3dc0293fbe1c913e45ae4f06f687eb6053ab6bc29b297a656e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x324E 7120 bytes

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