Malicious PDF — malware analysis report

Static analysis result for SHA-256 56325b4058691c92…

MALICIOUS

PDF

63.2 KB Created: 2021-02-21 22:22:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b725edd30c7eac97305913e86ca0316b SHA-1: 5f46cafd499d0336d62da3550ebd1945d2724ef0 SHA-256: 56325b4058691c92c953cf73304ec226062be2b61d6c1e59aba99f320513d6b8
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://maypoin.ru/wix?keyword=otometeki+koi+kakumei+love+revo+cheats PDF link annotation
    • https://jitifawe.weebly.com/uploads/1/3/5/3/135327084/945e014f815f.pdfIn PDF document text
    • https://naziwimirup.weebly.com/uploads/1/3/4/3/134371197/tolezasimerixisizoju.pdfIn PDF document text
    • https://pemowazazafal.weebly.com/uploads/1/3/5/3/135385959/5377672.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jozixal.epizy.com/amplifier_remix_dj_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/fepoletud.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/sowobetegevitetetap.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/ti_ch_play_apk_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/99318305589.pdfIn PDF document text
    • http://xezedif.epizy.com/a_theory_of_fun_for_game_design_2nd_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/cidco_form_for_home.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/gabuzelizonofixibutibimep.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/virus_scan_for_mac_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/yard_machines_riding_mower_oil_change.pdfIn PDF document text
    • http://xifabopopotesa.epizy.com/bibliography_format_for_physics_project.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/pujixujatogesajibopu.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/7215549026.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/99958282906.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/fisher_and_paykel_healthcare_annual_report_2016.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_off0000ba32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA32 5188 bytes
SHA-256: ef470e1e7569e87997e31042e94adeb05fb1e5ad028dd5baf06b51d5a0ab8b0b
font_01_sfnt_off0000cbb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBB1 10684 bytes
SHA-256: cf687e9b454de9d6f6d3bdd900295bc6f91fa5e3676baf64c06994a65d5ede6d

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