Malicious PDF — malware analysis report

Static analysis result for SHA-256 bad50aa229d906e6…

MALICIOUS

PDF

40.5 KB Created: 2020-10-07 20:45:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9c6ad15d7d131b07ce6d922ebfe917e8 SHA-1: ec9d2a77a07f005921db8fb89002d29130141828 SHA-256: bad50aa229d906e69ef44939ee0c90a4d8529114c45b071b85c3cab46740503c
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/strik?keyword=mechanics+of+materials+8th+edition+gere+goodno+solutions+manual In PDF document text
    • https://site-1037141.mozfiles.com/files/1037141/68453842035.pdfIn PDF document text
    • https://site-1036680.mozfiles.com/files/1036680/99901980664.pdfIn PDF document text
    • http://files.animasfire.com/uploads/1/3/1/4/131454696/silame_kopigofitad_roluxi.pdfIn PDF document text
    • http://sejumu.freebirdok.com/uploads/1/3/2/6/132682883/gonufiled_rivuko_gopazesugibaku_rinanefozenu.pdfIn PDF document text
    • http://files.oregonbiomedicalassociation.org/uploads/1/3/0/7/130775509/rupulidedima-kovalonefazuza.pdfIn PDF document text
    • http://files.annsmartmartin.com/uploads/1/3/0/8/130873996/xurugoxuv.pdfIn PDF document text
    • http://files.holyspiritdovecot.org/uploads/1/3/0/7/130740026/jekutisu.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://cdn.shopify.com/s/files/1/0481/4569/4869/files/persona_4_new_game_plus_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/3555/7794/files/95562468506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2434/1400/files/capital_resources_sentence_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8660/1626/files/bukenuxod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9711/5809/files/dell_optiplex_390_small_form_factor_motherboard.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8f6f60b-50d8-4fb0-9666-5d2870a898ec/nozumuzonibilexobatip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb071ae4-ac77-4ca2-b78f-0b8961dcffd7/mivemurajofimorijuf.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000514d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x514D 5516 bytes
SHA-256: db2f6d0b62aa6f4f566024e0732d56aac088ae506e594a927cf5c6f4d7e74cf8
font_01_sfnt_off000063d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D7 10084 bytes
SHA-256: f930b004939f7e6f8345fdbd7284711c2b5fa7405c150949d2ccd030c7ca833f
font_02_sfnt_off00008666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8666 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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