Malicious PDF — malware analysis report

Static analysis result for SHA-256 17ab27f4285bf903…

MALICIOUS

PDF

41.5 KB Created: 2020-08-30 22:48:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a20cc7e43043cb0215089d464fcfbc3c SHA-1: 611d83791a681b0b86e7707155a4265b8f049626 SHA-256: 17ab27f4285bf9032d0c122fc3fb1c7788c90c748611fe9442e9169c713d25e0
154 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a known malicious redirector, disguised with text suggesting it contains instructions for a Chicco car seat. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic to distribute malicious content. The ML classifier strongly indicates maliciousness, and the overall structure points to a phishing or scam attempt.

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://ttraff.cc/wix?keyword=chicco+car+seat+keyfit+30+instructions
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/669297692.pdf
    • https://cdn.shopify.com/s/files/1/0431/9051/7911/files/44086165019.pdf
    • https://cdn.shopify.com/s/files/1/0431/0761/4882/files/12105081699.pdf
    • https://cdn.shopify.com/s/files/1/0433/8355/4202/files/tratamiento_retinopatia_hipertensiva.pdf
    • https://static.usrfiles.com/ugd/b4609a_dc6a712d247d4ca7b3dfa79d6e44fb7f.pdf
    • https://static.usrfiles.com/ugd/b8c837_54b7dcf7a2be4aa09672ee1cf0f27ae1.pdf
    • https://static.usrfiles.com/ugd/cbe7f7_43ebea27924b43ce8ae6e88700e80d1a.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf36f6b73d654dffb9ad9e1c2509dd58.pdf
    • https://static.usrfiles.com/ugd/99a8f2_85971e0681cb4259b23d2d267d616351.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/biragapos.pdf
    • https://cdn.shopify.com/s/files/1/0434/6236/1245/files/69506123183.pdf
    • https://cdn.shopify.com/s/files/1/0433/3332/0872/files/69648062820.pdf
    • https://cdn.shopify.com/s/files/1/0430/3880/2073/files/powebijivotezoj.pdf
    • https://cdn.shopify.com/s/files/1/0449/5550/0712/files/metal_forming_analysis_book_gtu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7090/5754/files/medical_virology_mcqs_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/1390/6327/files/gomamuvaduremibukuri.pdf
    • https://cdn.shopify.com/s/files/1/0464/7275/7406/files/descriptive_writing_worksheets_for_5th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0431/5355/5610/files/weight_for_height_z_score.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_off0000652f.bin
f24d6fbec50d81ded1bfb2f201536606d0895fe44c3031d669c08a1be83b7bbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x652F 5312 bytes
font_01_sfnt_off0000773c.bin
91349cd263bb10a2d2c852d58f625915b262c5b9883682f05dce5bd5cdd5490b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x773C 9824 bytes

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