Malicious PDF — malware analysis report

Static analysis result for SHA-256 2114288609071d90…

MALICIOUS

PDF

57.6 KB Created: 2020-10-02 00:07:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d26d3b5769341bcd5b8c440471fb17e1 SHA-1: b82f143c8371fb989b1efa1cdc7b1348374841f7 SHA-256: 2114288609071d908c464ebbdf5b10fa01885d27f810758bae5a8b4942f02951
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ggtraff.ru/strik?keyword=harry+potter+and+the+chamber+of+secr In PDF document text
    • https://site-1036696.mozfiles.com/files/1036696/lefazajoremulelirivabol.pdfIn PDF document text
    • https://site-1037103.mozfiles.com/files/1037103/51070917363.pdfIn PDF document text
    • https://site-1037253.mozfiles.com/files/1037253/fulutejovodan.pdfIn PDF document text
    • http://lujuzes.drsinyong.com/uploads/1/3/0/7/130739509/medukexojavo-dumagu-detufumubini.pdfIn PDF document text
    • http://files.3dvitog.com/uploads/1/3/2/6/132695387/bf9fadf2cd9.pdfIn PDF document text
    • http://rawime.sheepprogram.com/uploads/1/3/0/7/130776334/1322385.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/1/0496/7527/2349/files/fenapebadev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2602/8456/files/fexesikafijujubutotugowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3365/7498/files/system_of_a_down_byob_guitar_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1114/0507/files/sikipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6379/4069/files/46008625364.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_off0000a250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA250 5564 bytes
SHA-256: 188bad19091ee21c6c2efe063d6d5cc72a2ae5f8888f24adafbefdafc7219d73
font_01_sfnt_off0000b515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB515 10600 bytes
SHA-256: 777dc44d472bd1391896c745c073ef23dfcdba017964f9511d3ebc0d0ed01639