Malicious PDF — malware analysis report

Static analysis result for SHA-256 a068961392fb7937…

MALICIOUS

PDF

42.2 KB Created: 2020-03-29 07:04:06 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: b66a04169667d555d4e68961b130ba04 SHA-1: 3209e7c64f98b5ad7c84fba3461a78396dc553fc SHA-256: a068961392fb7937e308afb267f744b9403f06a43c52463d4cba159a6278ad6d
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, as detected by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or redirection scheme. The ML classifier also strongly indicated maliciousness. No scripts were extracted from this sample, and the document body is heavily obfuscated, but the primary malicious activity appears to be the distribution of links to external 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.
  • 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://nationalriskmanagementgroup.com/uploads/1/3/1/4/131438356/131438356.html#alchemy+and+mysticism+the+hermetic+museum+pdf PDF link annotation
    • http://simplifyitsquad.com/uploads/1/3/0/7/130740025/popitanule.pdfIn PDF document text
    • http://intradosconstruction.com/uploads/1/3/0/5/130588502/sevozuduzolupen.pdfIn PDF document text
    • http://www.neuropathyreliefofcolumbus.com/uploads/1/3/0/7/130739311/376964.pdfIn PDF document text
    • http://nps-music.com/uploads/1/3/0/4/130435813/52ee4c1dcda15.pdfIn PDF document text
    • http://mx.truceteachers.org/uploads/1/3/0/5/130544190/1641a8.pdfIn PDF document text
    • http://drrobertlang.com/uploads/1/3/0/5/130539926/molasufixopo.pdfIn PDF document text
    • http://xvalhalla.com/uploads/1/3/0/4/130490602/jineg.pdfIn PDF document text
    • http://therightspotconsignmentshop.com/uploads/1/3/0/6/130605349/mewitikamugujur.pdfIn PDF document text
    • http://amodernplace.com/uploads/1/3/0/6/130639776/6232586.pdfIn PDF document text
    • http://creastorm.com/uploads/1/3/0/3/130323392/zatitalazeniba.pdfIn PDF document text
    • http://www.arcadiagardensdesign.com/uploads/1/3/0/8/130874026/jovesojigodaf.pdfIn PDF document text
    • http://insightmusicstudio.com/uploads/1/3/0/3/130323196/397fb8b691d6.pdfIn PDF document text
    • http://dhjdance.com/uploads/1/3/0/5/130551386/4977723.pdfIn PDF document text
    • http://yangzhou2031.com/uploads/1/3/0/5/130547515/zedaf-xerineses-jelinifokuduzop-damisarovupas.pdfIn PDF document text
    • http://www.linahaskelportfolio.com/uploads/1/3/0/3/130313366/tuwusuza.pdfIn PDF document text
    • http://hostmaster.shadowcarsalain.com/uploads/1/3/0/2/130272330/rosadafubu.pdfIn PDF document text
    • http://transcreationlab.com/uploads/1/3/0/6/130620574/bisisikenolunu.pdfIn PDF document text
    • http://futurehorizonscounseling.com/uploads/1/3/0/7/130776249/guvize-lixunaxirufupo.pdfIn PDF document text
    • http://michelgaymard.com/uploads/1/3/0/7/130776478/vutekubowapeb.pdfIn PDF document text
    • http://shilohreunion.com/uploads/1/3/0/7/130776895/detejofoxokuzozoluj.pdfIn PDF document text
    • http://tahoetimbersledtours.com/uploads/1/3/0/3/130323164/c1fa02e.pdfIn PDF document text
    • http://mx.gameonwebdesign.com/uploads/1/3/0/6/130639540/b1cfc5ec.pdfIn PDF document text
    • http://localhealthyhappy.com/uploads/1/3/0/7/130775336/liwabukekobipuxewo.pdfIn PDF document text
    • http://francescas-italian-kitchen.com/uploads/1/3/0/5/130552016/dujapadafuzurusuxego.pdfIn PDF document text
    • http://harvestmoonmarketllc.com/uploads/1/3/0/7/130775786/karojinimiw.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
🗂 Part of campaign: auditionhell.com 6 samples

Related samples 2

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_off00007b2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B2E 8296 bytes
SHA-256: a72976f227f4861a9f99cafe85453f48d29415bc298e5929570ef4692856bbc5

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