Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a23419d59e5e8a7…

MALICIOUS

PDF

48.2 KB Created: 2020-08-04 03:44:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb5ed1c89ddb44f3dc364c76dc42be78 SHA-1: 3276e7b5f428a2aa27e3041e2cc71a3d4bf195f4 SHA-256: 1a23419d59e5e8a7155175a420fd608f7adfe7d9f4bbdc966ada8aefc2cd8591
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Abbyy pdf transformer' and 'word', suggesting a lure for users seeking software. The presence of a malicious redirector indicates an attempt to lead the user to a harmful destination, likely for further exploitation or credential harvesting.

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.
  • 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.
  • 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.com/pify?keyword=abbyy+pdf+transformer+12+full+%25E0%25B9%2581%25E0%25B8%259B%25E0%25B8%25A5%25E0%25B8%2587%25E0%25B9%2584%25E0%25B8%259F%25E0%25B8%25A5%25E0%25B9%258Cpdf+%25E0%25B9%2580%25E0%25B8%259B%25E0%25B9%2587%25E0%25B8%2599word+%25E0%25B9%2584%25E0%25B8%25A1%25E0%25B9%2588%25E0%25B9%2580%25E0%25B8%259E%25E0%25B8%25B5%25E0%25B9%2589%25E0%25B8%25A2%25E0%25B8%2599
    • http://files.eurocse.org/uploads/1/3/0/7/130739678/papaxi.pdf
    • http://files.maevemccarthy.net/uploads/1/3/1/8/131856852/xorukutifudanu.pdf
    • http://files.hencecounseling.com/uploads/1/3/1/4/131407493/9063356.pdf
    • http://files.brandyringer.com/uploads/1/3/1/3/131379325/wefinumavipatob.pdf
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/titazazitesujozurazanod.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0694/files/minediti.pdf
    • https://cdn.shopify.com/s/files/1/0430/7261/8657/files/petexiviripazideduwiduk.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3541/files/resize_pdf_mac_preview.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/46992769379.pdf
    • https://cdn.shopify.com/s/files/1/0433/9829/9813/files/jepul.pdf
    • https://cdn.shopify.com/s/files/1/0432/6624/4766/files/tiruvezipijukajigawariluv.pdf
    • https://cdn.shopify.com/s/files/1/0431/1344/7577/files/minecraft_diamond_helmet.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/tebikotusodo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6231/2611/files/nezonarekozepow.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005807.bin
e1769026e7518f8824e6b164a2b1cf619d0ed312a7ddbc7032caf4963a8d3040		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5807 5528 bytes
font_01_sfnt_off00006ac7.bin
1937d6edd1630bfd665a426c4e1a0e495eaf6b01e412bb93509d619fdd521a97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC7 8524 bytes
font_02_sfnt_off00008106.bin
eebe8f135558911d4eb0be4c511d6f96b6705e0331b15ab3493f8567f705b24a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8106 9400 bytes
font_03_sfnt_off0000a147.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA147 4324 bytes

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