Malicious PDF — malware analysis report

Static analysis result for SHA-256 854d1e58aa4331f2…

MALICIOUS

PDF

57.1 KB Created: 2020-06-09 06:59:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-15
MD5: 304d9e936c3cdca21fe19adb3fe95f7a SHA-1: 64be0e3f7591e76d44fe52d2e69accc0dad0b686 SHA-256: 854d1e58aa4331f28022b9e0cd4c62bb2e1e200996b0f3f0dc571a7cb6fb0fc0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links likely lead to malicious websites, potentially for phishing or distributing further malware. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the structure suggests a link farm designed to lure users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://xpertologist.com/uploads/1/3/1/4/131453784/131453784.html#%25D9%2582%25D9%2588%25D8%25A7%25D8%25B9%25D8%25AF+%25D8%25A7%25D9%2584%25D9%2584%25D8%25BA%25D8%25A9+%25D8%25A7%25D9%2584%25D8%25AA%25D8%25B1%25D9%2583%25D9%258A%25D8%25A9+%25D9%2583%25D8%25A7%25D9%2585%25D9%2584%25D8%25A9 PDF link annotation
    • http://belacaraph.com/uploads/1/3/0/4/130435930/d35f533c3faa.pdfIn PDF document text
    • http://go77.org/uploads/1/3/0/9/130969375/f67893.pdfIn PDF document text
    • http://mta-sts.risingsuncounseling.com/uploads/1/3/0/6/130620912/213ce3.pdfIn PDF document text
    • http://raulrosasound.com/uploads/1/3/0/6/130605368/2383234.pdfIn PDF document text
    • http://yournextheadquarters.com/uploads/1/3/0/4/130483210/f6c48c95f507e65.pdfIn PDF document text
    • http://travelismyreligion.com/uploads/1/3/1/4/131454733/1707800.pdfIn PDF document text
    • http://subtlesurprise.ca/uploads/1/3/1/4/131453096/271e6839d40e3.pdfIn PDF document text
    • http://travelingchicboutique.net/uploads/1/3/1/6/131606457/kodaxuwidosuv.pdfIn PDF document text
    • http://1vn.undesirable.us/uploads/1/3/0/6/130621337/8388885.pdfIn PDF document text
    • http://hostmaster.winefest.ca/uploads/1/3/0/5/130551399/fbd95cf6a93d3a8.pdfIn PDF document text
    • http://fairytalesandwar.net/uploads/1/3/1/8/131857152/8666933.pdfIn PDF document text
    • http://hostmaster.mnbdesigns.co.uk/uploads/1/3/0/6/130620878/rubenulesavuwe_taxofod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://tazasituno.files.wordpress.com/2020/06/65914890059.pdfIn PDF document text
    • https://subezokebiw.files.wordpress.com/2020/06/burit.pdfIn PDF document text
    • https://miwegakumu.files.wordpress.com/2020/06/46479730308.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
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

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
stream_003_off00009ffc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9FFC 31212 bytes
SHA-256: b2e46db645470e70d04d76ddfbdf41269a8f154f6797923e5905c022aabc8f76
font_00_sfnt_off000081ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81AC 9028 bytes
SHA-256: 111fe7f8f9d69fa356f8ad20f44e4abacffafe456063b578dba3ae505e4487f3

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