Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a6b384d4d07e727…

MALICIOUS

PDF

47.5 KB Created: 2020-10-28 03:00:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 51e6da69f076f106744d8627c0bdb9cf SHA-1: 24e75fa9ae4e0e27cf4c3a0853f39e9995dc47a7 SHA-256: 0a6b384d4d07e7277d69c6f1c009791b8ef43ed8ea8d3070e885c9b003003571
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to drive traffic to malicious sites. The embedded URL "https://gettraff.ru/123?keyword=nevermore+rules+pdf" is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or malware distribution lure.

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://gettraff.ru/123?keyword=nevermore+rules+pdf In PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/nixozag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/pizivurapab/sapos.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/senixatijax.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/davivodefotetuwerifogakav.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/amar_chitra_katha_new.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/64161011172.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/tajimefaju.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/pengertian_akuntansi_keuangan.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/koduvotiwokasowawobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2441/4882/files/their_eyes_were_watching_god_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2850/3464/files/wuxazigejojumozoderofep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/7920/2469/files/negumatazagug.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/best_embryology_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/28507024378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2854/7237/files/xututikifevowumevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0343/2088/files/pudomopelitokofevitog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5289/8739/files/helix_jump_level_2020_mod_apk.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 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_off00006f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4A 4656 bytes
SHA-256: 23624c19ead7866697f37fa9e27c1237633fc539b81cdc20186de037af87429c
font_01_sfnt_off00007f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F27 10488 bytes
SHA-256: 8175f1e569ffd3b368cfcb0e930e98dd781e0cc232c591e8cb38875d37058396
font_02_sfnt_off0000a2e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2E5 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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