Malicious PDF — malware analysis report

Static analysis result for SHA-256 122212c11b4bbe36…

MALICIOUS

PDF

61.5 KB Created: 2020-08-14 13:23:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2866224adf2f62660b7bba2bc764e5b SHA-1: 38b124804df27e6bd02d842069a44bbd6496561b SHA-256: 122212c11b4bbe366f5fd9f9825aa6750688ae697dfd365afca0d1a0dd18bc40
162 Risk Score

Malware Insights

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

The PDF contains a lure related to a 'Pan card reprint application form' and embeds a link to a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the presence of numerous external PDF links suggest a phishing or redirection attempt. While no scripts were extracted, the document's structure and embedded links strongly indicate a malicious intent to redirect users to potentially harmful 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/pify?keyword=pan+card+reprint+application+form++pdf
    • http://lotubij.prescottinsightmeditation.org/uploads/1/3/1/6/131636725/865722.pdf
    • http://files.blackcatinvestigation.com/uploads/1/3/1/4/131437948/tadupijepabepar.pdf
    • http://files.carthagechurchofchrist.net/uploads/1/3/1/8/131856992/jevolitawiwisinir.pdf
    • http://files.thedougmargroup.com/uploads/1/3/0/7/130739704/850bbf4e8beb008.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/7966/3765/files/mewem.pdf
    • https://cdn.shopify.com/s/files/1/0438/4597/6221/files/65693223840.pdf
    • https://cdn.shopify.com/s/files/1/0433/6225/5006/files/monavobenonigalul.pdf
    • https://cdn.shopify.com/s/files/1/0427/7652/7014/files/vekida.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/liwisubusamepumiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/8579/0358/files/zopebaxafi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3595/9191/files/lexutugekilopatesimomi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9028/0609/files/86476419051.pdf
    • https://cdn.shopify.com/s/files/1/0439/7151/0430/files/digestive_system_of_ruminant_animals.pdf
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/72753323154.pdf
    • https://cdn.shopify.com/s/files/1/0437/5658/5111/files/class_11_ncert_chemistry_book_part_2.pdf
    • https://cdn.shopify.com/s/files/1/0443/4948/9308/files/declassified_report_definition.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a641.bin
f1fbc146381d9c143c35c0386b1e1af5f4ca52a729b0441bd5aa22c032d82c10		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA641 4912 bytes
font_01_sfnt_off0000b6cd.bin
66a12ee85f4e185453e2e90129a7f5d0af9af1a4e1ec345d5c1f7c9a40ea26c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB6CD 10352 bytes
font_02_sfnt_off0000da2d.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA2D 4324 bytes

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