Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dabbe0e3ddccdc0…

MALICIOUS

PDF

50.9 KB Created: 2020-10-17 01:22:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 21305513e4bcb8f0f86f2ba4eb3330db SHA-1: e9e9a594d097f19ab9754fd57c1c93263a5b1dde SHA-256: 1dabbe0e3ddccdc05c9106c4780e07fc2501664b9632e7c354ba415b57a8559e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to known malicious redirector infrastructure or appear to be part of an SEO link farm. The primary link identified, 'https://ttraff.me/123?keyword=problems+of+land+use+act+pdf', is flagged as malicious. This suggests the document's purpose is to direct users to potentially harmful websites, likely for phishing or malware distribution.

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.me/123?keyword=problems+of+land+use+act+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f86f94b367b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365627/normal_5f87e099ad677.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367299/normal_5f88925d6fd53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372354/normal_5f8a0dae34515.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369146/normal_5f8896006b455.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366032/normal_5f875c0326a4a.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/8709547.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/bamudepekepa_setumazowido.pdfIn PDF document text
    • https://ditiwudo.weebly.com/uploads/1/3/1/4/131452947/2546310.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/001156b4-3229-4b6d-bd17-b5d9c5367e69/temasaloxawim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1552/7833/files/s_a_t_p_phonics_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8529/4494/files/sylvania_scr1986bt-as_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5382/4677/files/85783613313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8572/3816/files/the_widow_season_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2991/4012/files/valirusinir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6093/1991/files/gawovepalaselex.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_off0000864a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x864A 5444 bytes
SHA-256: e7cdd33d3a321fd3a5ec4b87113844dd9168572e9bce90d5cb8d4594c763f17b
font_01_sfnt_off000098a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98A8 11696 bytes
SHA-256: 636f1d7f6b5e90746695534a1041fa998303b78a1f216bb8899de852788b61d5

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