Malicious PDF — malware analysis report

Static analysis result for SHA-256 059c5be95fade10e…

MALICIOUS

PDF

55.1 KB Created: 2020-08-25 08:53:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b089e6b37d98053c9554d687d4a4aacd SHA-1: 29a48e46a32838e1e3f0928340c3a7a63c830b95 SHA-256: 059c5be95fade10ee2c77ffccb2d15eb66a65d99674eb6a68d839bdf8d2740b6
154 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate a strong likelihood of malicious intent, aiming to lure users to external sites. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of numerous links suggests a phishing or content-luring attack.

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/pify?keyword=clip+er+app
    • http://mepepezem.nexusdesign.co/uploads/1/3/1/4/131482962/c57ab.pdf
    • http://wujawu.casadegrode.com/uploads/1/3/1/4/131407552/6c10a6ffe3cc6.pdf
    • http://files.globalpentorch.net/uploads/1/3/1/3/131379636/6308430.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0429/8375/1831/files/50921429448.pdf
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/php_format_phone_number.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6514/files/48186058753.pdf
    • https://cdn.shopify.com/s/files/1/0432/5670/9288/files/29563768672.pdf
    • https://cdn.shopify.com/s/files/1/0430/5459/6250/files/16245855848.pdf
    • https://cdn.shopify.com/s/files/1/0463/0396/9437/files/online_housing_registration_form.pdf
    • https://cdn.shopify.com/s/files/1/0434/1946/7934/files/45204526389.pdf
    • https://cdn.shopify.com/s/files/1/0431/0145/4500/files/minecraft_witch_drops.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65069223210.pdf
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/97027322853.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97897646990.pdf
    • https://cdn.shopify.com/s/files/1/0434/3614/6855/files/19333226662.pdf
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/difaruzuno.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a09.bin
c8d9b6c0b0ffccfbd4f15b0c4a857378d82508066db972ed8521fddab9292c48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A09 4148 bytes
font_01_sfnt_off0000780d.bin
4c8815b111a7d868ee7b5005a64d47621191cac4d944a21974ac324959a3640f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x780D 4820 bytes
font_02_sfnt_off00008525.bin
361cf5123a843ab0b18d7f736ac12e51ba5a005ebafb272608fb834e86b40632		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8525 10508 bytes
font_03_sfnt_off0000a90f.bin
0662033f378a1fed63c5220fd0e6e0d135abfc5aaa21bba8d2ab494950e0ca4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA90F 17332 bytes
font_04_sfnt_off0000c0c6.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0C6 4324 bytes

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