Malicious PDF — malware analysis report

Static analysis result for SHA-256 8984fd70a61bb091…

MALICIOUS

PDF

44.4 KB Created: 2020-08-22 23:03:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a025016121408f68fc37bd048bbb007 SHA-1: 0efc3ca2c2b4606bc711234d922ab5bf28a5149b SHA-256: 8984fd70a61bb09126556a1de96fc384f513e831cef05b7203f8923b8fc43645
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=arjun+movie+telugu'. The document body, though heavily obfuscated, contains references to this URL, suggesting it's the primary lure. The file's purpose appears to be directing users to malicious infrastructure, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=arjun+movie+telugu
    • http://files.misslandosmathtutoring.com/uploads/1/3/0/7/130740464/kimuf-juwenetemajopa.pdf
    • http://redom.ipksportsbetting.com/uploads/1/3/1/8/131857252/xulubafude_fowiwu_sowelorujigeb_kamagigo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/biblia_plenitud_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0431/2236/0469/files/exponential_form_calculator_answer.pdf
    • https://cdn.shopify.com/s/files/1/0431/0335/5034/files/51596203159.pdf
    • https://cdn.shopify.com/s/files/1/0437/6068/1111/files/prepositional_phrase_list_a_z.pdf
    • https://cdn.shopify.com/s/files/1/0434/8251/3561/files/tuwepiluvudogomefiroxira.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2104/files/ranigajizekekibodiba.pdf
    • https://cdn.shopify.com/s/files/1/0430/7684/5728/files/advertising_vocabulary_list.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_off00005d9b.bin
9f04847f04b1279636f3ff04dcf7b5ab67c22b1fdd568735100ddc688f6d18a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9B 4744 bytes
font_01_sfnt_off00006db2.bin
3b24dd731cc704dd307213b5c376f912ee08cde961fbe2938b567363bfc0d67d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB2 10040 bytes
font_02_sfnt_off00009047.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9047 16164 bytes

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