Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6cd19024e3e3fc8…

MALICIOUS

PDF

70.5 KB Created: 2020-03-21 19:53:45 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 85348f7324436c5dfc890540b6433fb6 SHA-1: 3e80c0a4b7d9e3934030fbad8aa7871e8026b36f SHA-256: b6cd19024e3e3fc81eb7be75c15a3e49794c68345948c057d82da35558b991fa
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, a technique often used for SEO poisoning or to distribute malicious content. The document body itself appears to be a lure, referencing 'Bhagavad gita malayalam pdf with meaning', while the embedded links point to various PDF files on different domains. No scripts were extracted, and the primary malicious activity appears to be the mass distribution of 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://tartelaine.com/uploads/1/3/0/6/130621376/130621376.html#bhagavad+gita+malayalam+pdf+with+meaning PDF link annotation
    • http://salidamagnetica.com/uploads/1/3/0/8/130874521/ritebunujasurevud.pdfIn PDF document text
    • http://naturalroofingslate.net/uploads/1/3/0/8/130874422/salij-miwiriketuvat-basosedija-sixekexitisituk.pdfIn PDF document text
    • http://mx.bevmcclellanrobynfear.com/uploads/1/3/0/7/130775529/dunatew.pdfIn PDF document text
    • http://skilledmanagers.com/uploads/1/3/0/5/130544872/7064326.pdfIn PDF document text
    • http://kleinforensicpsychiatry.com/uploads/1/3/0/2/130271195/5363290.pdfIn PDF document text
    • http://www.vincentschepers.com/uploads/1/3/0/6/130639456/3838946.pdfIn PDF document text
    • http://etalimserver.etalim.com/uploads/1/3/0/7/130775181/f54dd4a6199644.pdfIn PDF document text
    • http://healthywaydeadlyway.net/uploads/1/3/0/2/130274146/netun.pdfIn PDF document text
    • http://verticalfitness100.com/uploads/1/3/0/7/130740112/8b8fde473c.pdfIn PDF document text
    • http://turpinenterprises.com/uploads/1/3/0/6/130622063/timigenuwune-warokobo-jabasekusaze.pdfIn PDF document text
    • http://overlandremovalswhitsundays.com/uploads/1/3/0/5/130588727/6395816.pdfIn PDF document text
    • http://karmanline.film/uploads/1/3/0/7/130776118/7cd8ca4c812689.pdfIn PDF document text
    • http://www.dynamicallyfocused.com/uploads/1/3/0/7/130776814/2520767.pdfIn PDF document text
    • http://23qg.com/uploads/1/3/0/7/130775856/b6dd31f7dc905.pdfIn PDF document text
    • http://dmsaulnier.com/uploads/1/3/0/8/130873930/2122819.pdfIn PDF document text
    • http://suzannesamin.com/uploads/1/3/0/5/130543766/9155382.pdfIn PDF document text
    • http://motivationgroupfitnessstudio.com/uploads/1/3/0/2/130287943/f9a5c.pdfIn PDF document text
    • http://www.corporateworlddropouts.com/uploads/1/3/0/6/130620176/sodalijiwoxe-ganapiraze-libesawola-fodegelugi.pdfIn PDF document text
    • http://terriersagainsttrump.com/uploads/1/3/0/4/130435657/ff2e89a.pdfIn PDF document text
    • http://www.jackiesmallma.com/uploads/1/3/0/8/130814078/60abeac.pdfIn PDF document text
    • http://multiserviceliscasllc.com/uploads/1/3/0/4/130483540/9dd3b09c721745.pdfIn PDF document text
    • http://www.atomicdesignsandapparel.com/uploads/1/3/0/7/130740623/wokinokuvewub.pdfIn PDF document text
    • http://www.ecobathroomrepaircompany.com.au/uploads/1/3/0/7/130740033/5612052.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7359 7300 bytes
SHA-256: dba9c6eaa77820acd5e0f4a156072cef254d89bc4bf26cd49c99fb7221b43282
font_01_sfnt_off00009008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9008 16028 bytes
SHA-256: ca889182d22413b1a5b6446cd5d954c095bfc2c8b2fec1022b19199100617195
font_02_sfnt_off0000a456.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA456 37628 bytes
SHA-256: 6e41b7a0dc02ab0a734cb789db16089a32eae7854d8f2dd260c1d990f8e45552

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