Malicious PDF — malware analysis report

Static analysis result for SHA-256 6389f04b5660ab47…

MALICIOUS

PDF

32.3 KB Created: 2020-08-08 05:55:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89fbc39a65c73000d397af5d86d6ada5 SHA-1: b9c496875385eacdcfedc0a0b6068772c00684d5 SHA-256: 6389f04b5660ab4796060bbec971ca6449f3c06b6da3c4cd7789f682372264c6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which are designed to appear as academic resources. The primary link identified redirects to a known malicious redirector infrastructure at 'ttraff.com'. The document's structure and the presence of numerous external links suggest an attempt to drive traffic to malicious sites, likely for phishing or malware distribution.

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.com/wb?keyword=resampling%20methods%20for%20dependent%20data%20lahiri%20pdf
    • http://files.crmodelrepair.com/uploads/1/3/1/4/131406701/bekotobifomulezojoni.pdf
    • http://files.catherinebliss.com/uploads/1/3/0/9/130969160/rekaloniw_tizapevurok.pdf
    • http://files.skyleblanc.com/uploads/1/3/1/6/131637034/sabosutukitikusuwiw.pdf
    • http://files.legaciesofsuccess.org/uploads/1/3/1/4/131453124/kikilizixom.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40948382406.pdf
    • https://cdn.shopify.com/s/files/1/0430/2284/4067/files/gapeduwanepojadewu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7849/2072/files/83314764884.pdf
    • https://cdn.shopify.com/s/files/1/0433/4092/3048/files/programmatically_annotate.pdf
    • https://cdn.shopify.com/s/files/1/0433/6533/5190/files/30247868597.pdf
    • https://cdn.shopify.com/s/files/1/0429/7284/0090/files/how_to_search_a_scanned_document.pdf
    • https://cdn.shopify.com/s/files/1/0438/1809/0653/files/75288112029.pdf
    • https://cdn.shopify.com/s/files/1/0431/9890/6528/files/vunitujaxasusopujakodik.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bobidaxida.pdf
    • https://cdn.shopify.com/s/files/1/0436/0234/6148/files/44625148242.pdf
    • https://cdn.shopify.com/s/files/1/0432/4291/3955/files/32767879094.pdf
    • https://cdn.shopify.com/s/files/1/0439/3094/3643/files/reforma_do_estado_e_administrao_publica_gerencial.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_off000044a0.bin
76457ab36be20cd5a29c4c222ce3cafde87dc46b055acee0d5f4a57bfec7cba8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44A0 5464 bytes
font_01_sfnt_off0000570a.bin
8e62fe2eff72e55f56e5116d935f1b022ea4766542d57f91fee835d0ded651b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x570A 8540 bytes

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