Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b77e9ef4d9d6db8…

MALICIOUS

PDF

45.6 KB Created: 2020-08-12 02:43:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32eb0cf217375f4637536ee5b22efefa SHA-1: 5f1d89d1960e7faa1b932f664e7b4e70a096f3fd SHA-256: 6b77e9ef4d9d6db81df36747c5e9976e17cc2dde66c8ae876d910bca3caa5bf0
162 Risk Score

Malware Insights

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

This PDF document contains numerous links, masquerading as a utility for PDF to Excel conversion, which is a common lure for phishing or malware distribution. The primary link, https://ttraff.ru/pify?keyword=online+pdf+to+excel+converter+nitro, is identified as a malicious redirector. The document's structure and embedded links suggest an attempt to drive traffic to malicious infrastructure, likely for further exploitation or credential harvesting.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=online+pdf+to+excel+converter+nitro
    • http://files.420puffpuffpass.ca/uploads/1/3/0/8/130874634/muwafapodo-vuwal-dozijufux-juwutelew.pdf
    • http://fixotib.thefloriculture.com/uploads/1/3/0/8/130874493/a1fa1f818.pdf
    • http://fujexe.gardentogourmet.com.au/uploads/1/3/1/4/131453674/dijejisasanu_pifejorori.pdf
    • http://files.derricklrandall.com/uploads/1/3/1/4/131453387/6333e765936464.pdf
    • http://files.dominoeffectdjs.com/uploads/1/3/0/7/130775934/9f103bd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8749/5322/files/lowusuxazisububabamebotoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/4912/3993/files/rutitapesapojuze.pdf
    • https://cdn.shopify.com/s/files/1/0430/6753/9623/files/66th_national_film_awards_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/3975/9255/files/95868124696.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/18294975123.pdf
    • https://cdn.shopify.com/s/files/1/0433/0242/0644/files/jabiwamanovelo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3260/7894/files/doweruliwu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4224/1688/files/54186246255.pdf
    • https://cdn.shopify.com/s/files/1/0433/3853/0965/files/zezot.pdf
    • https://cdn.shopify.com/s/files/1/0436/5982/1209/files/business_intelligence_analyst_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/3771/2806/files/nojowax.pdf
    • https://cdn.shopify.com/s/files/1/0428/4314/4355/files/kibikedidugabogag.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f61.bin
757e49d5a9c6c8b44d256958f77c2701a704b978841dfd568e3e1de35bcb769a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F61 4916 bytes
font_01_sfnt_off00007033.bin
1895daaa6e1b0b327c97d66776d7f6d34c159e3231e4c577f861deacdde00675		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7033 10352 bytes
font_02_sfnt_off000093c6.bin
9d161d6e34f835aff196e226d852edde4d65b072a4902c32411b177d8c29261e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93C6 16076 bytes

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