Malicious PDF — malware analysis report

Static analysis result for SHA-256 76b1853dc7e998be…

MALICIOUS

PDF

63.8 KB Created: 2020-11-09 16:20:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 697af383f72370f1d4830f23c9b78b4f SHA-1: 23941e4ebd50c1bf6ba053f2a973d13641c57c7f SHA-256: 76b1853dc7e998be6f1a71b761006e40b6a3210633c8602c9d3e54c7b39e5964
84 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URL that redirects to a malicious domain, identified by heuristics as an SEO redirector for phishing. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to lure the user into clicking it. The ML classifier strongly indicates maliciousness, supporting the conclusion that this file is designed to lead users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://trafftec.ru/123?keyword=sims+freeplay+hacker PDF link annotation
    • https://wozofawado.weebly.com/uploads/1/3/0/8/130874325/2994412.pdfIn PDF document text
    • https://pupaxutakigi.weebly.com/uploads/1/3/4/5/134579126/dulibo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402951/normal_5f90e7adade26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426832/normal_5f9d9db644c94.pdfIn PDF document text
    • https://tovozilulu.weebly.com/uploads/1/3/0/8/130873983/4063496.pdfIn PDF document text
    • https://vivazezege.weebly.com/uploads/1/3/4/0/134041722/wumewizumun_vijomoxivenatin_wixofuri_figufedok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367941/normal_5f88c5bb9769f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a2ea97c-c82d-4e7f-8d4a-f5cf0a2db896/walmart_vudu_code_not_on_receipt.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/18777271501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7911744f-7ce5-496d-b127-d9a7877dc4b1/23826317166.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34110905-8bd4-4668-be0c-63c43aaa72fd/32130446142.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/mario_kart_ds_rom_hacks_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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7650 7264 bytes
SHA-256: 732167e78f8c02c17ca5e8110d91e2d50766b5677e79a7e8e656c985e78d97a6
font_01_sfnt_off00008937.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8937 5524 bytes
SHA-256: 39797f49c9050fef140aad8f8e5f484bf5aa7f5385fb7852a3651b11175d04ef
font_02_sfnt_off00009bdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BDC 15924 bytes
SHA-256: 7f528fcb935685263e03efd593e5bd7cab5b3052609ae00ff9cac9a0a0d1e8ae
font_03_sfnt_off0000c99f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC99F 16520 bytes
SHA-256: c5452649d5e604f5731c9098f72d761554f4a22d468dff3ea70ce6e17767e512
font_04_sfnt_off0000e019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE019 6288 bytes
SHA-256: a91a2e7d396d8a6a16019fcf49ee222d7689668f063d66531e1210c58a8c3a1e

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