Malicious PDF — malware analysis report

Static analysis result for SHA-256 694bcb38e18db29b…

MALICIOUS

PDF

38.8 KB Created: 2020-10-03 18:56:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 4e1da1cf5d3ebf6dd45db4e4aeb5905e SHA-1: 704f47ba7ae7cb9a3bcd6bdf1be43125c4bbf0c8 SHA-256: 694bcb38e18db29bb28b297d35c80b6c483753c963470f25c4a74d0323de4e5c
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of embedded links, many pointing to disposable domains and redirectors, indicating a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the sheer volume of links and the presence of a malicious redirector strongly suggest a malicious intent to direct users to harmful sites.

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://ggtraff.ru/strik?keyword=mods+de+autos+para+rfactor In PDF document text
    • http://semisik.expandlivings.com/uploads/1/3/0/9/130969684/juluzojoduvuwi.pdfIn PDF document text
    • http://files.americanmushroomandspice.com/uploads/1/3/1/3/131382395/fosebakakutas_ragenavetilavo_vejebufigor.pdfIn PDF document text
    • http://files.acromegalywest.com/uploads/1/3/2/8/132815015/5656f005.pdfIn PDF document text
    • http://tixodo.fempulse.com/uploads/1/3/1/3/131380771/965ac8864d282.pdfIn PDF document text
    • http://butamad.biblethought.net/uploads/1/3/1/6/131607240/fekozofu.pdfIn PDF document text
    • http://fuzol.lizamoscatelli.com/uploads/1/3/1/4/131453527/ranitev.pdfIn PDF document text
    • http://wulome.roseannstudio.com/uploads/1/3/2/6/132681542/c4a08df8b9.pdfIn PDF document text
    • http://files.stepupprojectsouthafrica.org/uploads/1/3/0/9/130968933/691bdd41220b10.pdfIn PDF document text
    • http://files.rentalsheets.com/uploads/1/3/0/8/130874539/fewopezejojiwob_fuvevowajizaz_rosoxibe_pipixegag.pdfIn PDF document text
    • http://wuxuka.sccellars.com/uploads/1/3/0/7/130776102/zuxuguzesa.pdfIn PDF document text
    • https://site-1036977.mozfiles.com/files/1036977/boxivoxaruva.pdfIn PDF document text
    • https://site-1039427.mozfiles.com/files/1039427/53413613699.pdfIn PDF document text
    • https://site-1036973.mozfiles.com/files/1036973/kefamusizikafek.pdfIn PDF document text
    • https://site-1038897.mozfiles.com/files/1038897/gevanuwixamizobupadak.pdfIn PDF document text
    • https://site-1038499.mozfiles.com/files/1038499/90512546825.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/1/0435/3107/5743/files/ph_and_nuclear_chemistry_worksheet_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4823/files/when_summer_ends.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_off0000593c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x593C 5120 bytes
SHA-256: d0f2d2df1177fbe6f05f3ec8708c9848de6b7be594f26167f15d1f6c8ace1274
font_01_sfnt_off00006ac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC5 10528 bytes
SHA-256: d7e97eba64ed39f07cca22ea0d06864aa4ed39f0297c22313e416d57b0fafb59

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