Malicious PDF — malware analysis report

Static analysis result for SHA-256 700dab99323eb253…

MALICIOUS

PDF

42.9 KB Created: 2020-08-30 22:18:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: fe8d4e1f748ddcf3cd616b8236cfc484 SHA-1: 33dea44d17b75ccfbdf02e75ca99af710266b197 SHA-256: 700dab99323eb2536970c863b47e1d244e4db81e3f800a78a9c983c6fe4f0a9f
154 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous Shopify-hosted PDFs, with one primary redirector URL identified as malicious. The document body, though heavily obfuscated, contains the malicious URL, suggesting an attempt to lure users to external sites. The presence of multiple PDF links and a malicious redirector indicates a likely phishing or malware distribution 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://ttraff.link/wix?keyword=velocidade+media+exercicios+resolvid In 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/1/0436/2105/6672/files/zojopopolifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6146/8574/files/gegazimozodugolaboronow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3242/0264/files/catholic_bible_nrsv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nozawilod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0087/9510/files/single_scroll_website_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4000/4501/files/nba_bleacher_report_warriors.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7997/5591/files/xukujogixofipojebov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3199/3242/files/lithium_evanescence_sheet_music.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_85e1aaeea572428bad9bc86ed7fca052.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/516793_88cd63066d294c85bdf5a26a8c594181.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_fb642f2e8f87472d92571b067a601cef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7813/9556/files/43256963655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/car_maintenance_checklist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7387/1767/files/pretty_rave_girl_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/84641828113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9988/1639/files/gawogixodimimetajixowug.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_off00006623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6623 5176 bytes
SHA-256: 90f6fc5a68cd53ccde2b7e20cc3539df733931b25e33e985a536bb3e74c5f1ec
font_01_sfnt_off000077a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77A9 12476 bytes
SHA-256: b0c890afae4ad53fca06d13e2488341e6cd5eda3a2678baebb672194731b4008

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