Malicious PDF — malware analysis report

Static analysis result for SHA-256 12aff8400de66f98…

MALICIOUS

PDF

69.9 KB Created: 2020-09-17 12:17:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 45611824116548c0200ee46f1d9b22b6 SHA-1: 2ad76c792be8a8daf78f0500e19cbed17d023339 SHA-256: 12aff8400de66f980a39782afabe90786a42feafb63765112466232c462e2e6a
184 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to various disposable domains, indicating a link farm designed to redirect users to malicious content. One prominent URL, 'https://ttraff.link/wix?keyword=my+secret+bistro+mod+apk+happymod', suggests a lure related to modded applications. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector.

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.
  • 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.
  • 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://ttraff.link/wix?keyword=my+secret+bistro+mod+apk+happymod In PDF document text
    • http://dupepu.vcrhm.org/uploads/1/3/1/4/131452976/0a4208.pdfIn PDF document text
    • http://jadet.thegiveagency.ca/uploads/1/3/0/8/130813784/3152502.pdfIn PDF document text
    • http://guxekane.thebigbarmitzvah.com/uploads/1/3/0/7/130776760/jomejixuwuzow.pdfIn PDF document text
    • http://files.mountainhomeyogacenter.com/uploads/1/3/1/3/131379615/gonorujawaginufew.pdfIn PDF document text
    • http://ragatunu.diamondglamco.com/uploads/1/3/0/8/130873922/dotekewagutetu.pdfIn PDF document text
    • http://zirununix.donnastocker.com/uploads/1/3/1/4/131408432/papadovejeko.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://0b7ee999-c10f-4988-8780-a6f87feb19d4.filesusr.com/ugd/e2c223_eed2c629b9be400b8e3c4bf5f0d9fcba.pdf?index=trueIn PDF document text
    • https://1b596abc-7c9d-40c6-a544-7b562ea69891.filesusr.com/ugd/217b8a_a86a164b180c46c79265433250116cfe.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3247/6838/files/1783428707.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7670/5690/files/adobe_reader_apk_version_history.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3358/4035/files/27823385106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6060/9692/files/attendance_sheet_format_for_teachers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5852/7397/files/36293821873.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0000c976.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xC976 27604 bytes
SHA-256: 980617da3d4c2d82b60d6a3480cbb18f3d308bb6c7614f60e9b48a37411199c0
font_00_sfnt_off00006b98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B98 5588 bytes
SHA-256: 40b3a2f80353cd7794414d6af9a57853169943473f3b51bc10c23de11a6ef2a5
font_01_sfnt_off00007f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F22 5276 bytes
SHA-256: 9a436335f002bff647e28896947591480f2660d2cde39ab20ef3d949bec78b54
font_02_sfnt_off00009109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9109 6640 bytes
SHA-256: 2da83060ad210a9a1743b04a22b2cc5ebb14ba7af64fbaa5f25da2d26a1b3d84
font_03_sfnt_off0000a2a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2A7 12236 bytes
SHA-256: 1c8b4293e575c34050fb848d5c5ee388ed061b2cff7328f23c03de9cbc42e962
font_05_sfnt_off0000f9fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9FA 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71