Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eb9411332f15689…

MALICIOUS

PDF

57.1 KB Created: 2020-08-10 10:17:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 314b3c8adc188719435dc1d631277eb0 SHA-1: 8224523825d9cbf7e0856aaad7ae7e6290fc682b SHA-256: 2eb9411332f156893ddfe134b356458adcfd92802b6058db55d99fb40256b1f3
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.com/pify?keyword=causes+and+consequences+of+deforestation+in+ethiopia+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the primary purpose is to redirect the user to malicious infrastructure. The ML classifier strongly supports the malicious nature of this PDF.

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.com/pify?keyword=causes+and+consequences+of+deforestation+in+ethiopia+pdf
    • http://javigiva.danielakfineart.com/uploads/1/3/0/8/130814124/399631.pdf
    • http://files.groff4life.com/uploads/1/3/0/7/130740213/zosanoda.pdf
    • http://files.behrsnecessities.com/uploads/1/3/1/3/131381078/1558672.pdf
    • http://files.willowworth.com/uploads/1/3/0/8/130814192/3438966.pdf
    • http://files.prayingoutloudfoundation.com/uploads/1/3/1/8/131856956/ginotoxokusoruk.pdf
    • https://cdn.shopify.com/s/files/1/0429/2755/4723/files/sekowegudesuzunobu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3739/9960/files/32154558460.pdf
    • https://cdn.shopify.com/s/files/1/0433/7218/3703/files/95603283730.pdf
    • https://cdn.shopify.com/s/files/1/0437/3164/8661/files/filiridojufenelelazola.pdf
    • https://cdn.shopify.com/s/files/1/0431/8704/4510/files/jowubezozewivovabori.pdf
    • https://cdn.shopify.com/s/files/1/0432/4071/8496/files/30626868992.pdf
    • https://cdn.shopify.com/s/files/1/0435/8835/4207/files/normal_probability_distribution_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0440/0765/3526/files/19460007328.pdf
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/clicker_heroes_hacks.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55628578329.pdf
    • https://cdn.shopify.com/s/files/1/0437/4098/7543/files/mawonapofofotut.pdf
    • https://cdn.shopify.com/s/files/1/0427/9956/2911/files/17750151641.pdf
    • https://cdn.shopify.com/s/files/1/0435/4945/8591/files/11440768945.pdf
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/68830346520.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
font_00_sfnt_off0000927d.bin
a2f5ad3134209355573c711937ac4cc678e1bc1e0d0ba9a4db2f559bf8496be3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x927D 5244 bytes
font_01_sfnt_off0000a444.bin
4259c7afc58663660e088f0cf59849e8c31aab56fef3ff8537fb90d6f91fa588		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA444 10588 bytes
font_02_sfnt_off0000c849.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC849 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.