Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbb44f499b9f0f10…

MALICIOUS

PDF

44.0 KB Created: 2020-10-31 06:52:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 69eb0f7fd83df227e4203b46afcfb44b SHA-1: d9785abfccb835741691f2137488f555f6e05eda SHA-256: fbb44f499b9f0f108acffcff7fc73b2ba7af98ce1db3f2a0b5010a95baa944d6
154 Risk Score

Malware Insights

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

The PDF contains embedded links and a document body that attempts to mimic a taxi service advertisement. The primary malicious link, 'https://gettraff.ru/aws?keyword=taxi+service+long+island+city+astoria', is flagged as a known malicious redirector. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic to distribute malicious 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.
  • 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/aws?keyword=taxi+service+long+island+city+astoria In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368750/normal_5f87f6d9c4b41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422136/normal_5f992ad265b10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369166/normal_5f89655023407.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/1/0266/9510/6750/files/savejizenotinidufodig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1085/0467/files/roxisosug.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/auscultation_of_lung_sounds.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/the_tempest_synopsis.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/castle_on_a_cloud_lyrics_donna_vivino.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/sumezaximalorosifate.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/kivuworizi.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/sememu.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_off00006c24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C24 5288 bytes
SHA-256: 8a5e9f8c8acd514b97468a1aa362ca247b274cc3b33f1eee23a377f9018482ac
font_01_sfnt_off00007e3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E3B 10828 bytes
SHA-256: fb38e6df84cf1c97a9c3cdc7aaed1728373267ac5bdffcabf1fa92070bb0ab94

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