Malicious PDF — malware analysis report

Static analysis result for SHA-256 30b017fb141b34ce…

MALICIOUS

PDF

80.0 KB Created: 2020-11-17 22:12:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: ebd5d3ee3584bcc2921887bbeb819689 SHA-1: da93a38a142685bf403c44fba945573fd1f9dd3c SHA-256: 30b017fb141b34cec81f2448c3462a63a789c24464084349a262031783c52254
214 Risk Score

Malware Insights

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

This PDF file was flagged by multiple critical heuristics as malicious, including a redirector link and a link farm. The ML classifier also strongly indicated maliciousness. The embedded URLs suggest a phishing or malware distribution attempt, likely initiated via spearphishing attachment. No scripts were extracted, but the presence of numerous external links points to an attempt to redirect the user to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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/strik?utm_term=bill+of+sale+alberta In PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/4831054.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375353/normal_5f9f0ee10dc7f.pdfIn PDF document text
    • https://sizuxemonip.weebly.com/uploads/1/3/4/3/134315948/4653547.pdfIn PDF document text
    • https://tunomofezu.weebly.com/uploads/1/3/2/3/132303147/2423232.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389604/normal_5f9dc68209f8f.pdfIn PDF document text
    • https://duxawedi.weebly.com/uploads/1/3/4/4/134477895/fc76bef3.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://uploads.strikinglycdn.com/files/aefc94af-a4bc-4b1c-84f1-1e39dafd8a23/6250399784.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/candlestick_livro_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9df1001-54f1-4487-b023-a929c9162b8e/super_mario_galaxy_2_green_stars_locations.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac7ea304-e152-4e4c-a9de-f0af2f4b5a17/51017566829.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb945e6d-8766-438a-8986-7ac4ae907e9b/21948541379.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/apk_mods_apps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02af26b5-8ef4-4f18-91b1-3c91095321c1/wkbn_tv_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8246fd5f-2c5f-4dd6-b1ad-b155ffdea0a4/vadixiwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2a3118e-7b86-41a2-9856-808bf6a26021/10279585196.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_off0000d9e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E1 4632 bytes
SHA-256: 330c689d2e1a31ea019dfc6812538be1bfc01e68bcd3a10062a2aed43c790416
font_01_sfnt_off0000e9a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A7 11172 bytes
SHA-256: 247a3643e51d525f787a50015f1e1188a14938acda08d39e6d14b517df3eb278
font_02_sfnt_off00010fc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FC7 16140 bytes
SHA-256: 1ffca1ef16be5e2ec436e77f9211a88ad3199dc781cb76600401cc2e2c7dce6d
font_03_sfnt_off000124c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124C3 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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