Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c564976097ab5c1…

MALICIOUS

PDF

40.8 KB Created: 2020-11-03 05:35:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 61a3f8c540158713404eb590647b3d43 SHA-1: 8d3e3133088dbd28088987e5817b6f26db845aac SHA-256: 1c564976097ab5c1de78c3fff9c9698fc56bd3cb5c8ad7478353e1ee860af376
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains embedded links that are flagged as malicious redirectors, specifically targeting users searching for pest control services. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the same malicious URL, suggesting a phishing or scam attempt to redirect users to harmful content.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/123?keyword=exterminators+near+me+for+bee+removal In PDF document text
    • https://cdn-cms.f-static.net/uploads/4411489/normal_5f94972f71621.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369506/normal_5f93c832c647b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f87c5b830f40.pdfIn PDF document text
    • https://fimozafovobas.weebly.com/uploads/1/3/2/7/132741130/gapavapi-bewoxov-vujanitoro-bazavapone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366668/normal_5f8894329aa30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391315/normal_5f8fb46135bf5.pdfIn PDF document text
    • https://nukewixe.weebly.com/uploads/1/3/4/3/134385223/750ef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/alopecia_frontal_fibrosante_tratamiento.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0acbb522-480c-4d04-80da-ac987d052053/61994834474.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/gipekokefitopidoj.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/english_literature_textbook_high_school.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/calculating_area_of_irregular_shapes.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_off000061cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CF 5136 bytes
SHA-256: bb3b36b8d9c0ecf01034255ea0044fbb5a2356d5a17cb33a40272c95de1e202c
font_01_sfnt_off00007338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7338 10356 bytes
SHA-256: 0f0e12c9b6561d3ddc1643e3c4e9b47540f8292bbc7f36e28eb4aec75e56e6f0

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