Malicious PDF — malware analysis report

Static analysis result for SHA-256 23ebc0e223fabaf4…

MALICIOUS

PDF

41.8 KB Created: 2020-10-08 08:25:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 018795b8a5669ff926f34f6f20991086 SHA-1: b4e533d2b19d31e36f05525e606eeeff26487bca SHA-256: 23ebc0e223fabaf4b129936ec51f0bc47cc280d02f84b6dc3f72199a3fff82c4
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://gettraff.ru/strik?keyword=wie+man+Steifheit+nach+dem+knieersat In PDF document text
    • http://files.drmichaelcolgan.com/uploads/1/3/0/7/130740193/kigeduvexejebus_vesatugexogenuf_luwewawekoragi.pdfIn PDF document text
    • http://files.e360microwave.com/uploads/1/3/1/8/131856158/53d10a402.pdfIn PDF document text
    • http://tonow.oldschoolsailing.com/uploads/1/3/1/6/131606295/zonijitekojo_xasonitamet_gilapuzenilekev_muraf.pdfIn PDF document text
    • http://files.erinmerrill.studio/uploads/1/3/1/6/131637016/zofizini_tubavebozin_fuwasolozonofo_dimutozo.pdfIn PDF document text
    • http://files.essexwindowfashions.com/uploads/1/3/1/4/131407067/pofabozuxirinu-momelaf.pdfIn PDF document text
    • https://site-1039492.mozfiles.com/files/1039492/kogefiwetexezebuwam.pdfIn PDF document text
    • https://site-1038874.mozfiles.com/files/1038874/11431249021.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0565/9296/files/fapajano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/fim_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3838/9925/files/59300077500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7650/9080/files/77807530937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9919/6066/files/11_year_anniversary_gift_traditional.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0724/4955/files/99917914114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7715/7542/files/39980840038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8543/8883/files/74580673976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8637/1752/files/gosit.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E8 5504 bytes
SHA-256: 02c68034d01ecac83e7da6a77fe852f8595976c4eaa86351c86724941f528802
font_01_sfnt_off00007485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7485 10964 bytes
SHA-256: ff2ee0589dbd2bb0c55000a9453efa58a9ec9b4282cfff510a2ba0788127c98b

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