Malicious PDF — malware analysis report

Static analysis result for SHA-256 083df8c7ccb50750…

MALICIOUS

PDF

38.0 KB Authoring application: LibreOffice First seen: 2020-09-24
MD5: f1163462669cfd4d15ef9ad820fe1e32 SHA-1: c96d8dea67669b6be70b35b5e110c97825b5ce16 SHA-256: 083df8c7ccb50750b990d119b9bad5ef5b7a4bf661d235e8d41d401614206a65
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains a large number of algorithmically generated URLs, indicating a link farm designed to host malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. The embedded document body text is heavily obfuscated and does not provide clear instructions, but the presence of numerous external PDF links points towards a strategy of redirecting users to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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 In PDF document text
    • http://natinelflowerslinensandrentals.com/uploads/1/3/0/3/130313190/1ae876aff67.pdfIn PDF document text
    • http://ilaugh.club/uploads/1/3/0/7/130740378/edd88e0.pdfIn PDF document text
    • http://cracksnail.com/uploads/1/3/0/6/130604558/rebigi.pdfIn PDF document text
    • http://bb-horses.ch/uploads/1/3/0/9/130969777/pibev.pdfIn PDF document text
    • http://drinkinggamescentral.com/uploads/1/3/0/5/130539735/a3e0edfb424e1.pdfIn PDF document text
    • http://theillusiveeye.com/uploads/1/3/0/7/130739158/nazafukubag.pdfIn PDF document text
    • http://themindfulsociologist.com/uploads/1/3/0/8/130813550/5efd55989e55e.pdfIn PDF document text
    • http://benjamingoldbergdmd.com/uploads/1/3/0/3/130313105/faduni.pdfIn PDF document text
    • http://cpanel.beautifulbrowsorlando.com/uploads/1/3/0/6/130639413/gaketikugiwepupu.pdfIn PDF document text
    • http://marketinginalbania.net/uploads/1/3/0/4/130435746/2ff62b5.pdfIn PDF document text
    • http://deckplans.voyagerwebsites.com/uploads/1/3/0/2/130289320/9fa284c6bc14ef7.pdfIn PDF document text
    • http://jgregoryfilms.com/uploads/1/3/0/6/130621579/976397.pdfIn PDF document text
    • http://aaceglobal.com/uploads/1/3/0/7/130775772/pezufulamip.pdfIn PDF document text
    • http://chandlermedicalpllc.com/uploads/1/3/0/8/130873829/910dc15e7697813.pdfIn PDF document text
    • http://cloudnificant.com/uploads/1/3/0/5/130551457/c5503.pdfIn PDF document text
    • http://honeycombclothing.com/uploads/1/3/0/8/130873894/6059457.pdfIn PDF document text
    • http://ludmeister.org/uploads/1/3/0/2/130273814/5e200b4653.pdfIn PDF document text
    • http://redneckfest.org/uploads/1/3/0/3/130313000/700da71a.pdfIn PDF document text
    • http://apartmentsbastion.com/uploads/1/3/0/3/130313049/mofenubovuman_jidujuzuzex_supajolude.pdfIn PDF document text
    • http://claudiamurphy.com/uploads/1/3/0/7/130740210/samuwumeravinunelajo.pdfIn PDF document text
    • http://ludgatehillpartners.com/uploads/1/3/0/6/130603737/3994617.pdfIn PDF document text
    • http://heartbeatcoffee.com/uploads/1/3/0/5/130551325/3ff3447b3db.pdfIn PDF document text
    • http://arielledollinger.com/uploads/1/3/0/6/130605307/xirewogi.pdfIn PDF document text
    • http://jodidelaney.com/uploads/1/3/0/5/130544387/ripovosipuxaz.pdfIn PDF document text
    • http://a1374119xstreamtravel.xsideas.com/uploads/1/3/0/6/130639635/130639635.html#cure+klebsiella+pneumoniaeIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000324e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x324E 7120 bytes
SHA-256: 22e54bf417a05c3dc0293fbe1c913e45ae4f06f687eb6053ab6bc29b297a656e

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