Malicious PDF — malware analysis report

Static analysis result for SHA-256 54bf14b9a16b2fe2…

MALICIOUS

PDF

47.0 KB Created: 2020-03-15 10:24:42 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: ffabfb612574cfe6c0c8f5fd13f7f5b9 SHA-1: ef68c7934bca689187af97d7b56d78b287d94fbe SHA-256: 54bf14b9a16b2fe28e03c5e24779489c2ba958d8ad003a7ea3fafe55202b1b14
96 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, many of which appear to be part of a link farm. The primary purpose seems to be SEO manipulation or redirecting users to potentially malicious content hosted on these numerous domains. No scripts were extracted from this sample.

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://jazzmoondogs.com/uploads/1/3/0/6/130639545/130639545.html#binomische+formeln+%C3%BCbungen+klasse+8 PDF link annotation
    • http://spiritofthehorsestables.com/uploads/1/3/0/4/130488067/pifek_xejodonazi_totibamuna.pdfIn PDF document text
    • http://melissagillan.com/uploads/1/3/0/6/130604581/tirawobaxunot.pdfIn PDF document text
    • http://curtisalmond.com/uploads/1/3/0/8/130814285/1117424.pdfIn PDF document text
    • http://www.sjnaturalhairspa.com/uploads/1/3/0/8/130813987/cfe403.pdfIn PDF document text
    • http://tourbusrentalscalifornia.com/uploads/1/3/0/6/130604061/sodozigiwodirux.pdfIn PDF document text
    • http://the-bankruptcy.com/uploads/1/3/0/4/130478566/2748016.pdfIn PDF document text
    • http://www.rojosiena.org/uploads/1/3/0/7/130776539/c07f7783bf3.pdfIn PDF document text
    • http://letutravel.us/uploads/1/3/0/4/130476700/pamonadejev-sisoni-ginitanejezawos.pdfIn PDF document text
    • http://makeadiamond.net/uploads/1/3/0/2/130271078/jegeturiwabon.pdfIn PDF document text
    • http://lunacleaning.net/uploads/1/3/0/6/130620752/wilew.pdfIn PDF document text
    • http://themodcube.com/uploads/1/3/0/2/130287943/b9e16f97c6abec5.pdfIn PDF document text
    • http://www.rrchildrenscentre.com.au/uploads/1/3/0/8/130874073/1d4443560.pdfIn PDF document text
    • http://digitalmei.com/uploads/1/3/0/3/130323962/xazul.pdfIn PDF document text
    • http://amdiscosscotland.com/uploads/1/3/0/4/130476014/5609531.pdfIn PDF document text
    • http://www.itisvacation.com/uploads/1/3/0/6/130605292/194266.pdfIn PDF document text
    • http://absolutely-hair.com/uploads/1/3/0/7/130775137/pofaxuxoxoziv_jodipaberukire.pdfIn PDF document text
    • http://marcsilverguitarimprov.net/uploads/1/3/0/5/130542964/bawaxodudasubemem.pdfIn PDF document text
    • http://dragonwearables.com/uploads/1/3/0/6/130604069/zasogez.pdfIn PDF document text
    • http://elisabetkedziora.com/uploads/1/3/0/6/130639019/2201328.pdfIn PDF document text
    • http://vegan4animals.com/uploads/1/3/0/4/130488736/3964995.pdfIn PDF document text
    • http://mrsreid3rdgrade.com/uploads/1/3/0/5/130550703/6635592.pdfIn PDF document text
    • http://webmail.colovantage.com.au/uploads/1/3/0/4/130489909/vojozonepak-tuxipiguxabidi-tofetitaxegik-neniwo.pdfIn PDF document text
    • http://mikewrong.com/uploads/1/3/0/7/130775470/2b56a61.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

Related samples 1

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71E3 9988 bytes
SHA-256: 0ba9e6c312874b3168bb0cb339d4931c7fddbdcd185e4953d3d35f9217189456
font_01_sfnt_off00009627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9627 16200 bytes
SHA-256: a68467512e7669793ef290425b9daf386c453ea016a05324c02a663dab7e268f

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