Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e852a70f325ca06…

MALICIOUS

PDF

418.1 KB Created: 2020-08-06 08:25:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a449768bd5e3c87a4909891f8ac77d0 SHA-1: f03e396920c04388508b33ec8948878916ed00d3 SHA-256: 9e852a70f325ca06a59e62c79ad4663dbfa14faee9571196d7cc103fd7ef511e
94 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The embedded URL, 'https://ttraff.cc/pify?keyword=surah+baqarah+full+read+pdf', is likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains this URL, suggesting a lure to trick users into clicking the link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.cc/pify?keyword=surah+baqarah+full+read+pdf
    • http://files.perwangel.co.uk/uploads/1/3/2/3/132302759/sijuv_dozelefoj_jiloraxa_buwevobosa.pdf
    • http://wijubebi.mattparrottphilosophy.com/uploads/1/3/0/7/130739615/letinuv.pdf
    • http://files.ekosingers.com/uploads/1/3/1/1/131163740/dinadamezit.pdf
    • https://cdn.shopify.com/s/files/1/0431/2154/1271/files/kunifigiridirusebufaligu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0717/9941/files/telugu_christian_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/56429441262.pdf
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/zutifedupetexarora.pdf
    • https://cdn.shopify.com/s/files/1/0437/2358/7733/files/dugurisig.pdf
    • https://cdn.shopify.com/s/files/1/0439/2943/6315/files/sufenelul.pdf
    • https://cdn.shopify.com/s/files/1/0435/8589/6609/files/vewufiro.pdf
    • https://cdn.shopify.com/s/files/1/0432/5811/8312/files/56185684380.pdf
    • https://cdn.shopify.com/s/files/1/0434/0806/4677/files/livro_direito_penal_bitencourt.pdf
    • https://cdn.shopify.com/s/files/1/0427/6020/8540/files/gubiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/7233/1682/files/wastewater_recycling_process.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4366/files/nogufadip.pdf
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/dutokuboxesep.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off00063d7c.bin
0daef25112fedd91ea67436e33f2d6054aa118942b91d79dd0ef85d8ac0b508a
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x63D7C 35336 bytes
font_00_sfnt_off0005ffdf.bin
336979962916953ff4fa2735b5b13e5a2d1d5520cdd4f35c65c55c92701e3fea
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFDF 5320 bytes
font_01_sfnt_off000611e5.bin
da192a968436bf4ac33b2d7590016f614d0e13d8a315b27261c741c625e939df
pdf-font-stream PDF embedded font (sfnt) at offset 0x611E5 13872 bytes