Malicious PDF — malware analysis report

Static analysis result for SHA-256 fab2eb4731c6106e…

MALICIOUS

PDF

59.7 KB Created: 2020-08-02 11:26:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7288512e335e9bcd1cf3104299f9700 SHA-1: e30bb9ce21a12a7c9145646a1b37941eb05f78a0 SHA-256: fab2eb4731c6106edccc4bbd273829885f64e5638271dbe92a1188ca7ae4c72b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text referencing 'ffxiv housing macro' and the malicious URL, suggesting a lure. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be directing users to malicious infrastructure via embedded links.

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=ffxiv+housing+macro
    • http://files.puzzledog.ca/uploads/1/3/0/7/130775551/megikemane-wafurumebos-vadobuvomufifo-relok.pdf
    • http://files.jimpendergrass.com/uploads/1/3/2/8/132815961/xabixejeje-nenowapiwage-jisematonalon.pdf
    • http://files.xzibitstudios.com/uploads/1/3/1/3/131398334/tuzofirarukeb-dotajunedula-lisoluwilup.pdf
    • http://files.in2improv.org/uploads/1/3/0/9/130969910/kojuwodela.pdf
    • http://files.indonesiaagainstaids.org/uploads/1/3/1/4/131453847/xibosogo-witikin-lixesevofejoduw.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/jexegavepebomiriruviv.pdf
    • https://cdn.shopify.com/s/files/1/0432/2122/1533/files/92766798865.pdf
    • https://cdn.shopify.com/s/files/1/0435/8314/4104/files/dt466_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/9274/5117/files/49410044399.pdf
    • https://cdn.shopify.com/s/files/1/0429/7110/3395/files/92472132453.pdf
    • https://cdn.shopify.com/s/files/1/0434/8212/0357/files/69884684016.pdf
    • https://cdn.shopify.com/s/files/1/0435/5869/9159/files/aimbot_shell_shockers.pdf
    • https://cdn.shopify.com/s/files/1/0432/4114/4483/files/69547010619.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/divurularatikelodo.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054bc.bin
4a87f5b1c8319c3da40064b38d5e65ba889978c8829d245cb8b0ca34145973c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54BC 17324 bytes
font_01_sfnt_off00008c1d.bin
8cd5b1a1e6bb7dd4ad6cf8527bb1fb31991a5f6086ffe700f25d186e47c05b3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C1D 5348 bytes
font_02_sfnt_off00009e2d.bin
68bbe42c93759ab90c218695aa25c1747b40456063d11b0ac06b51d2514fd3e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E2D 1796 bytes
font_03_sfnt_off0000a6b8.bin
0d37677ee4ec4387c0df5a985a883483ba69be362598db14644a9f32a554e1d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6B8 10460 bytes
font_04_sfnt_off0000caac.bin
682a406efcdf7dd49f9c494c129bca6394f160b3e372cc4ba493723cd6bcd7e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCAAC 16660 bytes

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