Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c3aa49af55b5d42…

MALICIOUS

PDF

51.1 KB Created: 2020-09-17 12:45:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 79756c2a6c6df568c03f23f9b01eaf7f SHA-1: 354369a3410a1911a078dd8be01dea11ca7f3401 SHA-256: 4c3aa49af55b5d4208f4082aaad625fbcecf759be2a5432d9ffbad9010444fc3
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a link to a known malicious redirector, disguised as a search result for 'unblocked games'. This indicates a phishing or scam attempt. The document also features a large number of embedded links, characteristic of a link farm designed to manipulate search engine results.

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.me/wix?keyword=unblocked+games+66+77+99+tank+trouble In PDF document text
    • http://files.wintercutlery.com/uploads/1/3/1/8/131871625/zunanoximowisusifo.pdfIn PDF document text
    • http://files.lightningridgerealestate.com.au/uploads/1/3/2/8/132815961/tuwor.pdfIn PDF document text
    • http://files.thegovernorspub.com/uploads/1/3/1/4/131453718/sufinadaxub-xebarujut-vepesupez.pdfIn PDF document text
    • http://files.empactathletics.com/uploads/1/3/0/8/130874163/2093009.pdfIn PDF document text
    • http://files.alorenzdesign.com/uploads/1/3/1/3/131379530/jolaz.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://8f7791fb-41c0-48d9-a083-307fc3d83d5f.filesusr.com/ugd/d2cc1f_eeda8fbe09264d8c92c1f418e11d466e.pdf?index=trueIn PDF document text
    • https://ae13a2aa-b190-4a63-a880-eaad0ff9a51e.filesusr.com/ugd/18122d_5b59dbea6b1a449ea152de4676e5722f.pdf?index=trueIn PDF document text
    • https://0023f1eb-20a3-45da-9949-d63d0e1a568e.filesusr.com/ugd/576447_db188fd9de3b419aa8c595e558be0efc.pdf?index=trueIn PDF document text
    • https://d5dc681c-b1f3-4caa-b8bf-c349e448e89c.filesusr.com/ugd/b2ba6b_b21b86b7c4954a608d579bf3ca7d3256.pdf?index=trueIn PDF document text
    • https://98fd4eb7-1fef-47c8-9bed-1b67174ec0a1.filesusr.com/ugd/ab922d_e087e6c9af0d4bfe93fd458830492e65.pdf?index=trueIn PDF document text
    • https://c62b19b7-9c4c-4265-ad3f-6982e1b3e307.filesusr.com/ugd/c068f8_78a24c9678bc420ca08b86036cc0bf6c.pdf?index=trueIn PDF document text
    • https://43703478-b349-49de-8be6-f6336e7936a3.filesusr.com/ugd/5b5da7_243caa84eb794c9fa20a4f5c8050f768.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0873/6927/files/1812_overture_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8492/2526/files/tosezanonibuvesuzixuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/15235230310.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_off0000664f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x664F 5676 bytes
SHA-256: d88f70d3021f79a528b23fae0fd0c569ef3a8c9821ed73bc38ef053259e0fccd
font_01_sfnt_off00007982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7982 10160 bytes
SHA-256: 6566a7bda36e90dc4340409a70838dc328d03922843703b19ad1b5f45440aa46
font_02_sfnt_off00009ca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CA3 16036 bytes
SHA-256: 354dce64f07f3d7acdf6a04edf763950ffbfec4edcbb4bfe17b65a83544077bb
font_03_sfnt_off0000b10b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB10B 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378