Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed464aeb4331aae0…

MALICIOUS

PDF

51.3 KB Created: 2020-10-21 21:19:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 0398450911db6fe37ad84d9d17e27cb7 SHA-1: 9e62753660c690656e7bc2af6650c2444dd31578 SHA-256: ed464aeb4331aae06bc7e67c7c5f46feb32f1d963c7408361f96da41648b3bb2
154 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for academic content. The heuristic firings indicate that the PDF is designed to redirect users to malicious sites, likely as part of a link farm or phishing campaign.

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/123?keyword=advanced+inorganic+chemistry+6th+edition+pdf In PDF document text
    • https://xoraxabaxid.weebly.com/uploads/1/3/2/6/132682630/3816401.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/wotareropajewub.pdfIn PDF document text
    • https://kixatefibav.weebly.com/uploads/1/3/0/7/130776592/jibegerujodom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365639/normal_5f8734bfca934.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379839/normal_5f8c2b8dc00f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366362/normal_5f87fd22edeeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366642/normal_5f87b0aa68750.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368954/normal_5f88706aedd30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_5f8a1ca91b172.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379233/normal_5f8d104e9b2af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369655/normal_5f900f342e28c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387037/normal_5f8e395f6e521.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/domegagowevag/bremer_stadtmusikanten_bildergeschichte.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/soveputefoxokolinedez.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/afl_fixtures_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/96369618789.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/tratamiento_para_acidosis_respiratoria.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/audio_amplifier_design.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/behaviourism_by_watson.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/a_beginners_guide_to_investing_ivy_bytes.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/25917570894.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/17260755708.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/kugifeb.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/drumline_cadences.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/97378185012.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_off00008857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8857 5840 bytes
SHA-256: ff2c64b0b7412fd970c0a5153f6399548f846b9218db8eea4fac3df88d63eccf
font_01_sfnt_off00009c1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C1B 10272 bytes
SHA-256: 45460c7f231d89b76a13c8553fd74212be7f7d6c4d41a20e0b450f83374bf68e

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