Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ad1ba864187d547…

MALICIOUS

PDF

43.8 KB Created: 2020-11-03 21:49:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d047cee06cc2a167300a4c4ae839553 SHA-1: e4b72cd23910118311c5373f34d8b2a95c80db3d SHA-256: 0ad1ba864187d547a474eb9ef999d2649fc39db7f990f13bebe569400568fcd7
194 Risk Score

Malware Insights

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

The document exhibits characteristics of an advance-fee scam, presenting itself as a reference for APA book formatting to entice users to click a link. This link, 'https://ggtraff.ru/strik?keyword=reference+page+for+book+apa+format', redirects to known malicious infrastructure. The PDF also contains a large number of external links, suggesting a link farm or SEO manipulation tactic to distribute malicious content.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=reference+page+for+book+apa+format
    • https://cdn-cms.f-static.net/uploads/4409606/normal_5f9a2bbeae02d.pdf
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/a02dc248e6.pdf
    • https://sevanilab.weebly.com/uploads/1/3/1/4/131437268/6940685.pdf
    • https://cdn-cms.f-static.net/uploads/4420934/normal_5f97fcf799c24.pdf
    • https://cdn-cms.f-static.net/uploads/4376374/normal_5f8b13de2c76c.pdf
    • https://fulipevaxavu.weebly.com/uploads/1/3/2/6/132695351/lujuziro_zezekulita.pdf
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/jixidused.pdf
    • https://josugonu.weebly.com/uploads/1/3/4/4/134488469/guditip_dajesexubitepok_birogobuz.pdf
    • https://fekoguto.weebly.com/uploads/1/3/4/4/134491689/gutozigubadazowore.pdf
    • https://gimelukisisira.weebly.com/uploads/1/3/4/0/134040832/sesuk_dezolereti.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gavexilatuvitaz/11464342545.pdf
    • https://s3.amazonaws.com/muvemasoxaji/bovine_malignant_catarrhal_fever.pdf
    • https://s3.amazonaws.com/fulomufimikim/tok_essay_titles_2020.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aa0.bin
90301229fa6b89e9dc51251ee3aaaba8cccec819e2bcf4eb66e2f5e394403d26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA0 5336 bytes
font_01_sfnt_off00007cc3.bin
533daf70e1393f2ae4328f67811dc6678b7a90cdee06be648a73e1df8eb970ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC3 11292 bytes

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