Malicious PDF — malware analysis report

Static analysis result for SHA-256 50b3ad63ccec7b28…

MALICIOUS

PDF

136.4 KB Authoring application: LibreOffice First seen: 2020-09-07
MD5: be9b1cec3e647621ddb912f01205de5f SHA-1: 6558b7764ce20b9311f0644159a13e3eeb09906f SHA-256: 50b3ad63ccec7b2867e414a25a320b5c287be51065e56b506cedd3aa45e56da4
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a large external link farm. The ML classifier also assigned a high probability of maliciousness. The ClamAV detection indicates this is a known phishing or traffic-robot installer. The embedded URLs suggest a redirection or SEO-based attack, likely to distribute further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 3

  • 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.
  • 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://the-bandaid-project.com/uploads/1/3/0/5/130539090/pizir_guduzozap_visevimoto_zejoxubosebuvi.pdf In PDF document text
    • http://revistathesaurus.gov.co/uploads/1/3/0/7/130739379/5945650.pdfIn PDF document text
    • http://www.askjudithstephens.judithstephens.com/uploads/1/3/0/6/130620955/sufusamif.pdfIn PDF document text
    • http://treesofbaltimore.com/uploads/1/3/0/7/130739061/rapuzotesa.pdfIn PDF document text
    • http://ps110k.com/uploads/1/3/0/3/130379912/9992156.pdfIn PDF document text
    • http://www.dimsampaio.org/uploads/1/3/0/5/130551214/bukepolonom_zasinepifadu_filamemuta_bulegimotud.pdfIn PDF document text
    • http://74-123-76-163.mgwnet.com/uploads/1/3/0/6/130621059/lidananenakibatonaw.pdfIn PDF document text
    • http://mytrucutz.com/uploads/1/3/0/6/130605165/pojiroduxil-wedizoke-raliluwekifofu-denimi.pdfIn PDF document text
    • http://ricefamilyfarms.com/uploads/1/3/0/5/130539696/2eff070.pdfIn PDF document text
    • http://studiob.agency/uploads/1/3/0/2/130288630/bojeritipipafu.pdfIn PDF document text
    • http://nweqf.com/uploads/1/3/0/4/130488432/loxokokeva-wazagonivofazi-sunitiso.pdfIn PDF document text
    • http://nhgahplgsresidency.com/uploads/1/3/0/4/130488503/bcd3d6999e.pdfIn PDF document text
    • http://planetlearning.org/uploads/1/3/0/7/130739289/1822488.pdfIn PDF document text
    • http://middleagedpinay.com/uploads/1/3/0/5/130542769/tokimize.pdfIn PDF document text
    • http://thecaptainslady.com/uploads/1/3/0/5/130539004/4264939.pdfIn PDF document text
    • http://petalesdefleurs.com/uploads/1/3/0/2/130288310/feeb7348.pdfIn PDF document text
    • http://thiagotiveron.com/uploads/1/3/0/3/130323302/5f742b1438.pdfIn PDF document text
    • http://kanarider.com/uploads/1/3/0/7/130738666/9321228.pdfIn PDF document text
    • http://groovyemail.com/uploads/1/3/0/6/130605471/pikex.pdfIn PDF document text
    • http://l-etro.com/uploads/1/3/0/6/130605167/a4b4c.pdfIn PDF document text
    • http://dthmd.com/uploads/1/3/0/6/130603882/8755046.pdfIn PDF document text
    • http://sloanemorocco-efolio.com/uploads/1/3/0/6/130621918/tivemolupepetavi.pdfIn PDF document text
    • http://74-123-73-74.mgwnet.com/uploads/1/3/0/9/130968962/130968962.html#ammonia+metabolism+wikiIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005520.bin
ee355c2c51d9f4aa967795020dbbe5f17382e8a10a5ea382242896d856afcadb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5520 5400 bytes
font_01_sfnt_off000069d0.bin
66cfce72879f862e4dcf30118019893d6ed819add18b143b119a4f7468eaf8ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69D0 11740 bytes
font_02_sfnt_off000146e5.bin
629d5f458e369a257ac7f740b6d0f51a0fd5ae97b8e2725e8e343b5c1f0431a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x146E5 16404 bytes

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