Malicious PDF — malware analysis report

Static analysis result for SHA-256 38c8dd66a93ab7c7…

MALICIOUS

PDF

66.9 KB Created: 2020-03-10 05:51:56 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 5255571fca2a7239660ba0aba4708e49 SHA-1: 75537d372c733347b30afae05f352342a117e2ec SHA-256: 38c8dd66a93ab7c73b7c15d9d5103904e8d02f3fc4f7e2e0c5cd47cd6e1bbe54
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files on different domains. This suggests a link farm or SEO manipulation tactic. The primary heuristic identified a mass of external PDF links, indicating a potential distribution or redirection mechanism. No scripts were extracted, limiting the ability to determine further payload delivery or execution.

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.
  • 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://adventureinstincts.com/uploads/1/3/0/7/130739552/130739552.html#heapsort+algorithm+animation PDF link annotation
    • http://noralpha.com/uploads/1/3/0/5/130539204/497df9050581.pdfIn PDF document text
    • http://qualisplus.com/uploads/1/3/0/3/130313122/00e322618.pdfIn PDF document text
    • http://www.majastefansdottiragency.com/uploads/1/3/0/2/130288909/c77d94420bfffc.pdfIn PDF document text
    • http://trippinwithtracy.com/uploads/1/3/0/3/130313167/gumebijofovimaw-wowif.pdfIn PDF document text
    • http://www.paintballbend.paintballparadisebend.com/uploads/1/3/1/0/131070651/tadim.pdfIn PDF document text
    • http://hitchly.com/uploads/1/3/0/3/130323929/keninemuki.pdfIn PDF document text
    • http://m.findapartyconsultant.com/uploads/1/3/0/3/130379397/770140.pdfIn PDF document text
    • http://coolinggoods.com/uploads/1/3/0/6/130639479/rilezedutakifemeg.pdfIn PDF document text
    • http://carlinnguyen.com/uploads/1/3/0/6/130604458/tojejukibu-rifaselagiru-mosure-xukamusivedov.pdfIn PDF document text
    • http://www.sweetheartbakeryonline.ca/uploads/1/3/0/7/130740298/e8fb45d.pdfIn PDF document text
    • http://edens-hope.com/uploads/1/3/0/5/130588779/8122330.pdfIn PDF document text
    • http://reciclajesocial.com/uploads/1/3/0/2/130270977/59b8b.pdfIn PDF document text
    • http://dimsage.com/uploads/1/3/0/9/130969774/dikavagibop_pafilujavopojer_fimowovatutebu.pdfIn PDF document text
    • http://1215consulting.com/uploads/1/3/0/6/130604286/5366989.pdfIn PDF document text
    • http://theduceregroup.org/uploads/1/3/0/6/130604500/9956514.pdfIn PDF document text
    • http://bnbgourou.net/uploads/1/3/0/5/130543310/xugatawodixirox-daxamavalerar-tofexejujej-supogolevoniron.pdfIn PDF document text
    • http://ancientartstone.net/uploads/1/3/0/7/130775372/retawe_fowujize.pdfIn PDF document text
    • http://primaryhealthconsulting.com/uploads/1/3/0/5/130551564/768cd8b0b6f671.pdfIn PDF document text
    • http://cpanel.amparodelcastillo.edu.mx/uploads/1/3/0/6/130621789/f694f094e.pdfIn PDF document text
    • http://justbenz.com/uploads/1/3/0/4/130483680/fajabibusimut-bemoxikitowaf-merarapisozuxo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 2

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_off0000b995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB995 9668 bytes
SHA-256: 2cf35c3ef7887b791a60343d3cdf94e6bfa32cd2308333f5877dfa7eb2af2035
font_01_sfnt_off0000dd57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD57 2912 bytes
SHA-256: 30bcd45f2d7375ca13deea955b0855801dd89f1fa58e9462aef08f9e067eb07c
font_02_sfnt_off0000e7a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A8 16096 bytes
SHA-256: cebb673139263f3e74e963a1005f93beda1c1b58bac1f45b91c9c3efac572115

Open this report in the interactive analyzer, or submit your own file for analysis.