Malicious PDF — malware analysis report

Static analysis result for SHA-256 f41558d2ef5a05fc…

MALICIOUS

PDF

40.3 KB Created: 2020-08-08 22:47:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 095be2d87bf0adb1a9a778d474feb649 SHA-1: 8a7e33fad32f8837372d6355c50c738198234e56 SHA-256: f41558d2ef5a05fc35cf0bc1c78063d58bb8c8734c212cbe69aa9aac71f5964b
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=forever+aloe+vera+gel+benefits+pdf', which is designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, also contains this URL, reinforcing its malicious intent. The presence of a large number of external PDF links also suggests an attempt to manipulate search engine results or distribute content through a link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://ttraff.cc/pify?keyword=forever+aloe+vera+gel+benefits+pdf
    • http://files.comforttrainer.net/uploads/1/3/2/6/132681002/4312007.pdf
    • http://files.truetvmovies.net/uploads/1/3/1/4/131438583/tivawulamigaza.pdf
    • http://darufab.divasdesignsri.com/uploads/1/3/1/8/131857445/xudidotubilelul.pdf
    • https://cdn.shopify.com/s/files/1/0430/5184/3737/files/5444616785.pdf
    • https://cdn.shopify.com/s/files/1/0429/3849/9235/files/tawobapuvo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2549/7239/files/cinderella_3_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0448/3517/6608/files/brand_equity_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0436/1335/6189/files/understanding_analysis_stephen_abbott.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pifafesilepobusofamut.pdf
    • https://cdn.shopify.com/s/files/1/0439/1315/0632/files/company_profile_interior_design_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/journal_accounting_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/6318/0438/files/aerospace_engineering_books.pdf
    • https://cdn.shopify.com/s/files/1/0427/8393/2582/files/gepadutuvedipu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37278413385.pdf
    • https://cdn.shopify.com/s/files/1/0448/8128/1191/files/religious_fundamentalism_causes_and_effects.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f86.bin
564910f665d138d8b699b98663ddd8a8e0889e98f4bf32a86465ade6604f2a47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F86 5364 bytes
font_01_sfnt_off000071da.bin
c115694c7d0d5e999706f8b51ad96d13db3180a1401cc64b64856a84451a4701		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71DA 10008 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.