Malicious PDF — malware analysis report

Static analysis result for SHA-256 1141bb8499b191ad…

MALICIOUS

PDF

47.2 KB Created: 2020-10-26 04:02:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 1f2fc95131a6ce38862977e7e21ea9e5 SHA-1: de1f540a3a7a5eec5cf8e057f03e29540462317e SHA-256: 1141bb8499b191adc1a7170f9cceb5bb14e233ebca4f4cd0015c445cdaadfc56
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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 https://cctraff.ru/aws?keyword=que+son+las+redes+troficas+pdf In PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/didus-zafuvij.pdfIn PDF document text
    • https://waripeseditalas.weebly.com/uploads/1/3/4/0/134012866/bumoti-remujelozuruw-gamamiruneraje.pdfIn PDF document text
    • https://bebefezagogu.weebly.com/uploads/1/3/4/3/134372182/fumoraw.pdfIn PDF document text
    • https://wibiwiterudek.weebly.com/uploads/1/3/4/3/134373050/nazifebelerijal.pdfIn PDF document text
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/sexesir-korako.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/likanutavorolebonat.pdfIn PDF document text
    • https://gejovekozeja.weebly.com/uploads/1/3/4/4/134401956/28089.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/6931524.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006970.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006970.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00009fc2.bin)
    • https://s3.amazonaws.com/rupatojuko/equilibrio_acido_base_quimica.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/jepasumapaloma.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/mindray_pm_60_pulse_oximeter.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/burilojigidet.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/mezidotete.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1600db8c-9669-464f-a502-f0547e130676/bizonabe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c503e6b7-148a-4545-9f44-c504a1b6b627/86810903597.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1ad346a-91c5-4372-bcdd-614b4687a03f/vinipepuwotibizoni.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 extracted file (font_00_sfnt_off00006970.bin)

Related samples 8

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_off00006970.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6970 5092 bytes
SHA-256: d2ace1fbde30869cb0b98190b9d556975d6d795e311c24b536927f0713114f62
font_01_sfnt_off00007ac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC5 11400 bytes
SHA-256: 8bcf28ec90c060c4b4d1bd628450f87efde48066a95feaffe9cf8e0e73bf5503
font_02_sfnt_off00009fc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FC2 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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