Malicious PDF — malware analysis report

Static analysis result for SHA-256 a62a3de7f051b673…

MALICIOUS

PDF

35.5 KB Created: 2020-06-04 20:02:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-15
MD5: 3b143dec985db8ed38ffeea2b9e2c127 SHA-1: 0f43eca5d9b16412561d6cd2135eedc6cc1bc849 SHA-256: a62a3de7f051b673703f28685fc8f5eee29d5ea59414ac0cab9c46746373d9b2
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of external links, many of which are hosted on domains that appear to be part of a link farm. The document body text, though partially corrupted, includes phrases like 'New bollywood movie 2019 mkv' which serves as a lure. The embedded URLs likely lead to further malicious content or phishing pages. The heuristic 'PDF_SEO_LINK_FARM' strongly indicates a malicious intent to distribute links.

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://hamoenterprises.com/uploads/1/3/1/3/131380320/131380320.html#new+bollywood+movie+2019++mkv PDF link annotation
    • http://thefalliblephilosopher.com/uploads/1/3/0/6/130639901/dobamu.pdfIn PDF document text
    • http://independentrealty1.net/uploads/1/3/0/7/130776328/7150980.pdfIn PDF document text
    • http://carnitasmine.com/uploads/1/3/0/9/130969885/feluxenamara_tisemusa.pdfIn PDF document text
    • http://lakecityproperty.net/uploads/1/3/0/5/130590689/2322178.pdfIn PDF document text
    • http://ocpcvs.org/uploads/1/3/0/6/130605306/kosadeze.pdfIn PDF document text
    • http://hamoenterprises.com/uploads/1/3/1/3/131380320/terms.htmlIn PDF document text
    • http://hamoenterprises.com/uploads/1/3/1/3/131380320/dmca.htmlIn PDF document text
    • http://hamoenterprises.com/uploads/1/3/1/3/131380320/policy.htmlIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://pufivawekik711844011.files.wordpress.com/2020/06/jurejinetazikozoveduteb.pdfIn PDF document text
    • https://fonekumala.files.wordpress.com/2020/06/90668249922.pdfIn PDF document text
    • https://najetuj.files.wordpress.com/2020/06/lebowuvobedenifevoguxuri.pdfIn PDF document text
    • https://gozezade421546286.files.wordpress.com/2020/06/lesenufuvumusigenuvogiwo.pdfIn PDF document text
    • https://zakejebebi.files.wordpress.com/2020/06/97302786531.pdfIn PDF document text
    • https://dajedapopula.files.wordpress.com/2020/06/zilorusatazixadalevade.pdfIn PDF document text
    • https://kudosemuzuna.files.wordpress.com/2020/06/51936807961.pdfIn PDF document text
    • https://vilefulidexu.files.wordpress.com/2020/06/rojumatudufub.pdfIn PDF document text
    • https://febipomapaza.files.wordpress.com/2020/06/kinapusema.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://scripts.sil.org/OFLIn PDF document text

Related samples 1

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_off00005d7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7C 10668 bytes
SHA-256: bc8c8c00c07df89bda5a5585de37b3e9e3a54eafaa3473e32c239ccd9ae165c8

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