Malicious PDF — malware analysis report

Static analysis result for SHA-256 6917b919ee360cfd…

MALICIOUS

PDF

61.8 KB Created: 2020-09-16 23:10:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b581dde12a0beeedfb1fc62eb54e8fdd SHA-1: c771864267c14791ce2faae90080e5ea92b19e4b SHA-256: 6917b919ee360cfde6d187e8b50599e20becb09284853d9fe9ca2be5785fe92a
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One prominent link, 'https://ttraff.link/wix?keyword=wolf+watch+season+4+episode+6', is identified as a malicious redirector. The document's structure and the presence of numerous links suggest a link farm or SEO poisoning tactic, likely intended to drive traffic to malicious sites or distribute further malware. No scripts were extracted, but the embedded links are the primary indicators of malicious intent.

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=wolf+watch+season+4+episode+6
    • http://files.thechocolatetour.com/uploads/1/3/1/8/131871951/zabunetadesow_tokuban.pdf
    • http://bizix.artistsalive.org/uploads/1/3/1/8/131857782/kepupipazumuzez-rumikibumawojog-kajogufabobof.pdf
    • http://files.peopleforasafersociety.com/uploads/1/3/0/8/130874254/kedogu_kiwagenubuxiguk_xavusekidur.pdf
    • http://pufare.wall-in.com/uploads/1/3/2/6/132696067/guwidotajagipigadi.pdf
    • http://tixoma.yfeproductions.org/uploads/1/3/1/0/131070500/mojozinex.pdf
    • http://dogif.alexbaltodano.com/uploads/1/3/2/6/132696056/2cad32d.pdf
    • http://files.oneloveboutiqueky.com/uploads/1/3/2/6/132682919/kubemogosimake-fedujid-bibuvenanalosuz-jidurab.pdf
    • http://favivuj.mytpnoa.com/uploads/1/3/2/3/132302966/naxizatuwevekimaze.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cce26f99-4045-4818-9c58-10d02d5a12ad.filesusr.com/ugd/2c8d66_2e0d796412fa4d85b2297afff22a9283.pdf?index=true
    • https://a83290fc-2509-44b4-baba-d9635126b6d1.filesusr.com/ugd/9bd82e_7df1ce65c8d840a58bbc801061402b80.pdf?index=true
    • https://c781c13c-688c-4a7b-bf31-aac71d002f53.filesusr.com/ugd/bba345_57cabc30e8404cfa99d1ad96a4b44d70.pdf?index=true
    • https://a42892d5-08cb-4f04-8ad9-abe8604b95cc.filesusr.com/ugd/97aff7_3e6ddc415b3840d8bb1c9f8710a1d18f.pdf?index=true
    • https://8d035707-e807-4aa7-b9c2-fb53db069ab5.filesusr.com/ugd/1da05d_39470a9eb37940fe92b69e4f6d28d461.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/ncert_9th_class_english_textbook_beehive.pdf
    • https://cdn.shopify.com/s/files/1/0432/4642/0132/files/pibipuvojabagilonufog.pdf
    • https://cdn.shopify.com/s/files/1/0451/1848/8741/files/appraising_valuation_officer_past_papers.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_off0000b368.bin
2aac7852aa1a3e214cd0563515d79f8b48b434afd7db073f6d084216c46f935c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB368 5492 bytes
font_01_sfnt_off0000c63e.bin
b5955f585000e12d8026b19f3b3357a479ba76b1e90a28872b6a11b9261f294b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC63E 10700 bytes

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