Malicious PDF — malware analysis report

Static analysis result for SHA-256 64f67eb5de1a48c8…

MALICIOUS

PDF

39.0 KB Created: 2020-10-05 09:21:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: dd82331d215c0146ef133dd72ad07a52 SHA-1: 7fdbc41560746caf3e3df2718c38aeeb88dfbb9e SHA-256: 64f67eb5de1a48c8096bf5cb7cd1f7980c5bccec7d7487fd88878a28b33b869a
224 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are identified as malicious redirectors or part of a link farm designed to obscure the final destination. The document body, though heavily corrupted, contains the URL 'https://gettraff.ru/strik?keyword=telecharger+alad%25272+gratuit', which is also flagged as a malicious redirector. This suggests the primary purpose is to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://gettraff.ru/strik?keyword=telecharger+alad%25272+gratuit In PDF document text
    • http://foluru.thebeautyofpaint.com/uploads/1/3/0/7/130738526/fuvakidajoduten.pdfIn PDF document text
    • http://files.tacomamallneighborhood.com/uploads/1/3/2/3/132303010/c40999021b0d61.pdfIn PDF document text
    • http://files.lucyrhoades.com/uploads/1/3/0/8/130814052/db855afce8a7.pdfIn PDF document text
    • http://files.michalhess.com/uploads/1/3/1/4/131437157/lesaj-gojesotugirobox-gofij-jikix.pdfIn PDF document text
    • http://puwexeji.talarium.net/uploads/1/3/1/1/131163617/lunuwojurawesum-fokinukoxamed.pdfIn PDF document text
    • http://files.towingservicesnearmelosangeles.com/uploads/1/3/1/1/131163664/pexajowidaxele.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8251/4585/files/delomiriwarafijuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4782/2236/files/40074316448.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/382acaec-bbb3-4e55-aae4-b8cde4a53cef/vorave.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/830664e3-2d83-4336-a512-c47e90db751c/12783259963.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6958b692-423c-405e-a214-d6dbef78605e/lobuwiwakivaxo.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005917.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5917 5136 bytes
SHA-256: 7fd88398277df82f8adfa9a1f2b91572e637b5db525e894bfa4a55c16a554c09
font_01_sfnt_off00006a8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A8C 11292 bytes
SHA-256: 5ff8745e77da2270f4bcd2ecb31b7188e0d0e3e3765ce87f88177cd30af1a819

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