Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e066d1bd04e0861…

MALICIOUS

PDF

49.9 KB Created: 2020-10-15 10:13:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: fc8eb05a693097292d7f533676e10018 SHA-1: f26186afbc0fd5ca3ba28ac83460d7de3d87d5cb SHA-256: 7e066d1bd04e0861550fe5a09969f13f8d3747683bd10b460472761da9a0c225
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a redirector that leads to a "link farm" of other PDFs, suggesting a SEO poisoning or spamming campaign. The embedded URL `https://gettraff.ru/pify?keyword=12th+chemistry+important+questions+pdf+free+download` is identified as malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to the malicious URLs and appears to be a lure for downloading more PDF files.

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://gettraff.ru/pify?keyword=12th+chemistry+important+questions+pdf+free+download In PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/nozejiba_riwufovemudes_vodimot.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/nojof.pdfIn PDF document text
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/domijedaxixak.pdfIn PDF document text
    • https://site-1037840.mozfiles.com/files/1037840/73966512304.pdfIn PDF document text
    • https://site-1041281.mozfiles.com/files/1041281/90204611603.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/pawotexoxaramitase.pdfIn PDF document text
    • https://wovasemuzusalej.weebly.com/uploads/1/3/1/6/131636629/waxijefelege_vefimofuliredif.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/bidevegamowiz.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/domovodibaposix.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/jibepare-vudaramuzi-refirezagulele.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/vudodapazepipux_kijemomebegax_velagokotukif.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/xojajuv-mitegejitokuxig.pdfIn PDF document text
    • https://texitanoz.weebly.com/uploads/1/3/0/7/130739996/mabapigar.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/1/0482/8630/2370/files/18366011423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0265/7957/files/kotuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/1325/9431/files/metal_dowels_home_depot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4488/1059/files/the_diary_of_jane_lyrics.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8A 5804 bytes
SHA-256: c23f86f3a0a38d8bbb6a4fab25b0c15a26ed327551a596f50595243e9e6702dc
font_01_sfnt_off00008134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8134 10388 bytes
SHA-256: ac263cc5c1f463841580e89b39b106584a35704dd89e5231fe3b0cbc8569b60a
font_02_sfnt_off0000a4b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4B3 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3

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