Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bcdab615cc2fb59…

MALICIOUS

PDF

35.9 KB Created: 2020-10-12 05:07:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ec109bd9d28ab53a5f6756d4a4fcdce9 SHA-1: 1f32838e900559c15564a87b49ab6812b86483dc SHA-256: 7bcdab615cc2fb596c6136524d2160710c89274b69ad58ec3dfa485e247d82a5
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/pify?keyword=ratatouille+free+online In PDF document text
    • http://xaburit.lifeisbeautifulandhealthy.com/uploads/1/3/0/9/130968917/lezusujij.pdfIn PDF document text
    • http://files.cocreativ.net/uploads/1/3/0/7/130738972/d48368aa9c1.pdfIn PDF document text
    • https://site-1039645.mozfiles.com/files/1039645/7153336.pdfIn PDF document text
    • https://site-1037902.mozfiles.com/files/1037902/gunivigazipe.pdfIn PDF document text
    • https://site-1037024.mozfiles.com/files/1037024/wovunixekitafolukimide.pdfIn PDF document text
    • https://site-1039404.mozfiles.com/files/1039404/72778597477.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/1/0481/0588/1763/files/pack_and_paddle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7036/0225/files/43949102344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4184/0552/files/fcat_explorer_science_mission_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/2372/0602/files/character_vs_society_movie_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5956/9055/files/zipajutaxuwal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4272/6310/files/amc_30_mesquite_fandango.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/6843/9707/files/into_the_wild_activity_13_answers.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_off00004f60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F60 4592 bytes
SHA-256: 23659843f491aa45f527f431b341b4e9fb84abaf3454ca19938265470dee465c
font_01_sfnt_off00005f10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F10 10584 bytes
SHA-256: 5852945718b8c8a21c387cef39ef368750202717922ff751540b0b62b6ed4589