Malicious PDF — malware analysis report

Static analysis result for SHA-256 6463d5c3982f84fd…

MALICIOUS

PDF

52.6 KB Created: 2020-11-08 03:44:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 36920307a731cb009e4453070047eeb8 SHA-1: dd853b3a97d8747f096d607d5a1a02c51875b8fc SHA-256: 6463d5c3982f84fde55baa35e2a873b96886f6711f415fd9ef6def4e7f1d11e9
232 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffking.ru/aws?keyword=movies+apk+for+pc In PDF document text
    • https://soxajenukaru.weebly.com/uploads/1/3/0/8/130874283/fofuwumok.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/5641504.pdfIn PDF document text
    • https://fijuwokokaku.weebly.com/uploads/1/3/4/3/134382009/a31fc32a87a2.pdfIn PDF document text
    • https://tovozilulu.weebly.com/uploads/1/3/0/8/130873983/vixemivew.pdfIn PDF document text
    • https://zakewurez.weebly.com/uploads/1/3/4/4/134471700/supogunivadura.pdfIn PDF document text
    • https://junovolosexev.weebly.com/uploads/1/3/4/4/134467690/korutopiturolup_kivavonidozalit_kezaka_napan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://modiginofom.files.wordpress.com/2020/11/the_faithful_executioner.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/animal_jam_membership_generator_no_survey.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec99b877-27ce-4f67-8af8-33519541480c/introduction_to_econometrics_dougher.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09d59f31-d21d-4a78-8fe6-41543bfff03c/big_hero_6_wasabi_scream.pdfIn PDF document text
    • https://momuvabixot.files.wordpress.com/2020/11/sezulafomod.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/the_blind_side_book_free_download.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6791 5108 bytes
SHA-256: 4b08df7393351bc34e911e636b4f47f00381a4a4e298d96a1964303e5a1c6d42
font_01_sfnt_off00007916.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7916 3728 bytes
SHA-256: 6f3c7c56232c51ee789f4c6173a5fcf573c6b2c41b4f4952f072fea03c6545f9
font_02_sfnt_off000087bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87BD 11484 bytes
SHA-256: 051475ce7bfa1af351ebe8beed3d77f8d3fd9509295a1883b1e7e34464b1fb50
font_03_sfnt_off0000aeac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEAC 16556 bytes
SHA-256: b4c37d1029a653432a97e1a7b14469fbb5233b18672210e5fc948bfcdb346bc0